Vbnet xls web page scrapeεργασίες

Φίλτρο

Οι πρόσφατες αναζητήσεις μου
Φιλτράρισμα κατά:
Προϋπολογισμός
σε
σε
σε
Είδος
Δεξιότητες
Γλώσσες
    Κατάσταση Δουλειάς
    2,000 vbnet xls web page scrape δουλειές που βρέθηκαν, με τιμές EUR

    I would like a logo and name for online women clothing boutique with boho casual and street clothing. Something unique, preferably not big word and easily remembered. sorry I can not delete the file. NOT GIVE ANY ATTENTION

    €16 (Avg Bid)
    €16 Μέση Προσφορά
    14 προσφορές

    Θα οργανώσουμε ενα φεστιβαλ μουσικής & ευεξίας το 3ήμερο της Πρωτομαγιάς 2022. Παρακαλώ τη προσφορά σας για τα παρακάτω: 1. Δημιουργία σελίδας στο FB ή Insta (θα αποφ&alph...

    €479 (Avg Bid)
    €479 Μέση Προσφορά
    11 προσφορές
    One page site With SEO Έχει λήξει left

    Ενδιαφέρομαι να κατασκευάσω ενα site με μια σελίδα για παρουσίαση καταστήματος, η οποια να ειναι φιλικη για κινητα, να εχει καποια αναδυομενα παραθυράκ&io...

    €88 (Avg Bid)
    €88 Μέση Προσφορά
    37 προσφορές
    Greek / Local/ ON-PAGE SEO wanted! Έχει λήξει left

    ONLY FOR GREEKS/CYPRIOTS / Everybody else will be ignored. Please do not bid if you are not speaking Greek. Καλησπερα. Απο online περιοδικο με 14.000+ αρθρα ζηταμε ενα ατομο που που θα αναλαβει το SEO site. Προφανως εχουμε καποια αρθρα που θελουμε &nu...

    €270 (Avg Bid)
    €270 Μέση Προσφορά
    11 προσφορές

    Αυτή η εργασία απευθύνεται μόνο σε Έλληνες. Οποιοδήποτε άλλος παρακαλώ να μην στείλει. Θέλω κάποιον να μου ρυθμίσει σωστά και να μου ανεβάσει το σκορ στο ...

    €50 (Avg Bid)
    €50 Μέση Προσφορά
    17 προσφορές

    Θέλω κάποιος να μου ρυθμίσει το Mikrotik έτσι ώστε όταν κάνει κάποιος login στο hotspot να τον μεταφέρει σε μία σελίδα!

    €8 - €29
    €8 - €29
    0 προσφορές
    import xls to drupal 7 Έχει λήξει left

    Έχω μία ιστοσελίδα η οποία είναι σε drupal 7. Θέλω να κάνω import στο site μου. Έχω δύο κατηγορίες που θα χρειαστώ την ίδια εργασία - στο ίδιο site. Η διαδικασία θα είναι να επιλέγω το exc...

    €33 (Avg Bid)
    €33 Μέση Προσφορά
    6 προσφορές
    Δημιουργία opt in page Έχει λήξει left

    Θα ήθελα να δημιουργήσω opt in page για να συλλέξω email δίνοντας δωρεάν ένα μικρό ebook.

    €13 / hr (Avg Bid)
    €13 / hr Μέση Προσφορά
    2 προσφορές

    Αναζητάμε προγραμματιστή με γνώσεις seo για να αναλάβει υποστήριξη και αλλαγές σε wordpress site. Οι αλλαγές αφορούν προσθήκη νέων σελίδων, προσθήκη video σε κεντρική σελίδα, α...

    €13 / hr (Avg Bid)
    €13 / hr Μέση Προσφορά
    32 προσφορές

    Χρειάζομαι διαχείριση μιας fun page, 3-4 post τη βδομάδα, 1 διαγωνισμό like & share ανά μήνα και διαχείριση της διαφημιστικής καμπάνιας (το κόστος της καμπάνιας θα αλλάζει ανά μήνα και θ&alpha...

    €37 (Avg Bid)
    €37 Μέση Προσφορά
    9 προσφορές

    Ενδιαφέρομαι για κάποιον-α γνώστη ΣΕΟ με προϋπηρεσία για μακροχρόνια συνεργασια.. Για πανω από 7 σαιτ.

    €131 (Avg Bid)
    €131 Μέση Προσφορά
    9 προσφορές
    SEO ON PAGE OFF PAGE Έχει λήξει left

    Ενδιαφέρομαι για κάποιον-α γνώστη ΣΕΟ με προϋπηρεσία για μακροχρόνια συνεργασια.. Για πανω από 7 σαιτ.

    €139 (Avg Bid)
    €139 Μέση Προσφορά
    1 προσφορές

    Θα θέλαμε να δημιουργήσουμε ένα νέο product page layout για ηλεκτρονικό κατάστημα το οποίο είναι πάνω σε opencart. Το layout έχει σχεδιαστεί σε Photoshop. Οι αλλαγές περιλαμβάνουν όλο το κομ&m...

    €499 (Avg Bid)
    €499 Μέση Προσφορά
    7 προσφορές

    Δημιουργία σελίδων Pitch page και Thank you page για την Clickbank.

    €121 (Avg Bid)
    €121 Μέση Προσφορά
    2 προσφορές
    Aquire first page Έχει λήξει left

    We want some links to aquire first page for %CE%BC%CE%B5%CF%84%CE%B1%CE%BC%CE%BF%CF%83%CF%87%CE%B5%CF%85%CF%83%CE%B7-%CE%BC%CE%B1%CE%BB%CE%BB%CE%B9%CF%89%CE% on keyword "μεταμοσχευση μαλλιων"

    SEO
    €135 (Avg Bid)
    €135 Μέση Προσφορά
    1 προσφορές
    Optimization - Page Speed Έχει λήξει left

    Ψαχνω προγραμματιστη με πολυ καλη γνώση πάνω στο optimization.

    €107 (Avg Bid)
    €107 Μέση Προσφορά
    5 προσφορές
    Z publish web page developer Έχει λήξει left

    Επιθυμούμε κάποιον τεχνικό με γνώσεις Z Publish, για να μπορέσει να μεταφέρει ιστοσελίδα σε άλλο πάροχο και να μπορεί να αναλάβει τη συντήρησή της.

    €121 (Avg Bid)
    €121 Μέση Προσφορά
    2 προσφορές
    excel macrocel Έχει λήξει left

    εχω ένα αρχειο xls πρότυπο και πρέπει να διαβάσει και να συμπληρωθεί απο περίπου 1300 αρχεια excel που βρισκονται σε φακέλους.

    €45 (Avg Bid)
    €45 Μέση Προσφορά
    1 προσφορές

    I'm in need of a landing page designed to optimally generate leads. Its main aim is to engage, interest, and attract the general public. The spotlight feature will be a guide available for download, crafted to act as our main call-to-action. Ideal candidates for this project should: - Have a background in graphic and web design. - Have experience in creating intuitive forms (steps), Big plus if you have Marketo Knowledge - Know how to align a site's aesthetic with its target audience. - Understand how to encourage and increase user interaction. - Have previous experience creating landing pages for lead generation. - Have a keen attention to detail when it comes to user interfaces. Flair in creating excitement around a download will be a significant plus point.

    €10 (Avg Bid)
    €10 Μέση Προσφορά
    9 προσφορές
    Python Excel Data Cleaning & Manipulation 6 μέρες left
    ΕΠΙΒΕΒΑΙΩΜΕΝΟ

    ...central focus will be: - Data Reshaping: You'll be transferring data from daily received *.xls files to a timeseries database. Tee database must be updated regularly, every day when one or more new datasets are available. - Data Cleaning: This involves improving the quality of data in our Excel files. Inaccuracies are often a result of missing data, which you'll need to identify and rectify. Key skills and experience needed: - Proficient in using Python with Excel for data analysis and manipulation. - Expertise in data cleaning, particularly in identifying and addressing missing data, double occurences, inconsistent datas - Experience in reshaping data into different formats, preferably from *.xls to timeseries *.csv. the created python scripts must be...

    €149 (Avg Bid)
    €149 Μέση Προσφορά
    33 προσφορές

    ...designer with experience in Figma to create a unique, modern and minimalistic landing page that will be used to promote my product/service. Key Requirements: - Experience in Figma: You should have a good grasp of Figma as this will be the primary tool used for designing the landing page. - Design Skills: A strong eye for design, particularly in creating modern and minimalistic layouts, is necessary. - Understanding of Marketing: As the landing page will be used to promote my product/service, knowledge of what makes an effective landing page that drives conversions is a must. The ideal candidate should be able to work closely with me to understand the product/service being promoted, in order to design a landing page that effectively communicates its v...

    €35 (Avg Bid)
    €35 Μέση Προσφορά
    34 προσφορές

    ...designer with experience in Figma to create a unique, modern and minimalistic landing page that will be used to promote my product/service. Key Requirements: - Experience in Figma: You should have a good grasp of Figma as this will be the primary tool used for designing the landing page. - Design Skills: A strong eye for design, particularly in creating modern and minimalistic layouts, is necessary. - Understanding of Marketing: As the landing page will be used to promote my product/service, knowledge of what makes an effective landing page that drives conversions is a must. The ideal candidate should be able to work closely with me to understand the product/service being promoted, in order to design a landing page that effectively communicates its v...

    €29 (Avg Bid)
    €29 Μέση Προσφορά
    42 προσφορές

    I am looking for a seasoned Wikipedia editor to help me create a well-structured, professional Wikipedia page for a notable person. Key Responsibilities: - Researching and understanding the notability guidelines for Wikipedia to ensure the page is compliant. - Creating a well-written, informative, and unbiased page about the individual. - Citing reliable, verifiable online sources to back up the content. - Organizing and structuring the content in a way that is engaging and easy to read. Key Requirements: - Proven experience in creating, editing, and managing Wikipedia pages. - Strong research skills, particularly in finding reliable online sources. - Understanding of Wikipedia's policies and guidelines. - Excellent writing skills with the ability to produce pro...

    €371 (Avg Bid)
    €371 Μέση Προσφορά
    34 προσφορές

    As the President of The RadioCave Corporation; I'm in need of someone who can increase post engagements on my Facebook page through effective ad campaigns. The target audience includes young adults, parents, and small business owners and should appeal broadly as we're a non-profit working with all. The main goal is to ramp up the engagement level on our image-based posts. Ideally, you have a history of accomplishing such goals and an understanding of how to reach this varied demographic. Key Skills: - Expertise in Facebook ad campaigns - Experience with non-profit social media marketing - Proven track record in boosting post engagements - Ability to target and appeal to a global audience. I am looking for someone with a proven track record to help me boost post enga...

    €16 / hr (Avg Bid)
    €16 / hr Μέση Προσφορά
    35 προσφορές

    ...a program that can scrape for the addresses of homes listed and compile them into a CSV file. The program should include the duration each house has been listed on the site, and have it run every hour to capture new listings. Additionally, I would like duplicates to be automatically eliminated. Key Responsibilities: - Scrape for home addresses - Compile addresses in CSV format - Include the duration each house has been listed - Run the program every hour to capture new listings - Automatically eliminate any duplicate entrie - Run CSV file against another data base that has age and name of owner and contact info. Ideal Skills and Experience: - Experience in web scraping and data extraction - Proficiency in programming languages suitable for web scraping (...

    €19 / hr (Avg Bid)
    €19 / hr Μέση Προσφορά
    69 προσφορές
    Advanced Web Scraper for Monthly Text Content Extraction 6 μέρες left
    ΕΠΙΒΕΒΑΙΩΜΕΝΟ

    I'm looking for a skilled web scraper to handle challenging websites with advanced detection. The main data you will be required to scrape is text content. Here are the key project details: Ideal candidate should have: - Experience in web scraping, especially from challenging sites - Strong knowledge of web scraping tools and techniques - Proficiency in handling advanced automation detection - Excellent attention to detail to maintain a high level of data accuracy - Ability to deliver monthly updates in a timely manner Please include any relevant past experiences or examples of similar projects in your bid.

    €457 (Avg Bid)
    €457 Μέση Προσφορά
    116 προσφορές
    €99 Μέση Προσφορά
    1 προσφορές

    I'm looking for a professional to create a landing page for my consulting office website. Key Requirements: - The main objective of this landing page is to provide contact information to potential clients. It should be designed in a way that makes it easy for visitors to find and use the contact details. Ideal Skills & Experience: - Proven experience in creating engaging and effective landing pages that convert. - Strong understanding of UX/UI design principles. - Knowledge of best practices for contact form design and user experience. - Familiarity with the consulting industry and its typical design standards would be a plus. Please note that the color scheme and specific elements to be included on the page have not been specified, so a degree of creativ...

    €55 (Avg Bid)
    €55 Μέση Προσφορά
    66 προσφορές
    Codeigniter 4 - Page loading slow 6 μέρες left
    ΕΠΙΒΕΒΑΙΩΜΕΝΟ

    Need to amend to speed up the loading. Page load slow when heavy. Amend on the flow. (3 issues only) Able to follow one by one. Work with ftp and start immediately.

    €40 (Avg Bid)
    €40 Μέση Προσφορά
    22 προσφορές
    Custom Shopify Page Development 6 μέρες left
    ΕΠΙΒΕΒΑΙΩΜΕΝΟ

    As the owner of a brand, I'm looking for a skilled Shopify developer to turn my design into a functional e-commerce site. My main requirement is to prioritize user experience optimization and ensure that my customers have a seamless and effortless shopping journey. Here's what I need: - A Shopify page built from a specific design. - Strong emphasis on user experience optimization. - No requirement for multiple language support, just English. As an ideal candidate, you should have: - Extensive experience in developing Shopify sites from scratch. - A keen eye for detail to accurately implement my design. - Expertise in user interface and user experience design. - Proven track record in creating easy-to-navigate online stores. Get in touch if you can help me create a Sh...

    €461 (Avg Bid)
    €461 Μέση Προσφορά
    169 προσφορές

    We are a 3-person travel company that focuses on pilgrimage tours in Europe. We just finished web development with a designer and would like someone to clean up a few issues and get our website put to fully functioning status

    €402 (Avg Bid)
    €402 Μέση Προσφορά
    104 προσφορές

    I'm looking for a skilled Oracle APEX developer to create a results and statistics page for a quiz platform. I need the form to reveal the correct answers and individual statistics after it's submitted. Each question's answer must be shown right next to the user's choice so they can easily see what they missed. The ultimate score should be displayed in a format of 'achieved score/out of total score' or 'percentage'. Key features: - Display the correct answers alongside participant's responses - Show the participant's score as 'achieved out of total' - Generate overall quiz statistics A background in Oracle APEX is mandatory and previous experience in quiz, survey, or similar interactive form development will be highly a...

    €150 (Avg Bid)
    €150 Μέση Προσφορά
    22 προσφορές

    I'm in need of a web scraping wizard who can help me extract text data and profiles from Twitter website. Key Requirements: - The ability to scrape text data and profile information efficiently and accurately. - Experience in web scraping, with a strong portfolio showcasing past work in similar projects. - The time for scraping a post and profile must be less 3 seconds without using Twitter API. The final deliverable should be in a format that's easy for me to analyze, but I'm flexible on whether it's a CSV file, Excel spreadsheet or a database format. Please describe your past work examples with your application. Write "Blue" on the head of your bid if you are not a bot.

    €128 (Avg Bid)
    €128 Μέση Προσφορά
    59 προσφορές
    Daily Financial Market announcement Scraper 6 μέρες left
    ΕΠΙΒΕΒΑΙΩΜΕΝΟ

    I'm in need of a professional who can develop a scraping tool that will track market announcements and releases on a financial website using specific keywords. - The tool should scrape this data on a daily basis. Accuracy and reliability are key. - the scraped data should be filtered for the current date, daily. - I need this table of data to be automatically filtered for keywords. -the filtered results to be emailed automatically to an email list. - the tool to run automatically on a website or server. I'm looking for someone who has a proven track record in web scraping with a focus on financial data. Experience in creating automated scraping tools, particularly those that operate on a daily basis, is a huge plus.

    €303 (Avg Bid)
    €303 Μέση Προσφορά
    59 προσφορές
    Web Scraping - Python 6 μέρες left

    I'm looking to scrape a website using the python package requests. 1) create a session because the site requires a username and pwd login 2) pass an initial URL that will get pagination of results 3) from the results we'll get the URL of the individual person/page we need to get info from 4) we'll make a request call within the session to the persons URL 5) Then we'll parse the HTML from the persons page 6) Then, we'll put the information into a dictionary object and append it to the a list 7) Finally we'll then print out the list of JSON objects to a text file

    €85 (Avg Bid)
    €85 Μέση Προσφορά
    49 προσφορές
    Created Fan Page for FB, Instagram and X -- 2 6 μέρες left
    ΕΠΙΒΕΒΑΙΩΜΕΝΟ

    I'm looking for a social media expert to created fan page for us FB, Instagram and X . Url of this page need be uniue

    €24 (Avg Bid)
    €24 Μέση Προσφορά
    35 προσφορές
    Shopify Developer - Fixing Product Page Bugs 6 μέρες left
    ΕΠΙΒΕΒΑΙΩΜΕΝΟ

    I'm looking for a Shopify expert who can help me with fixing some bugs on my product pages. Key Issues: - The pricing on some p...variants. Your bid should include a portfolio of past work you have done in this area. This will help me to assess your suitability for this project. I am also looking for someone who is comfortable with communicating via instant messaging. I would like to be able to reach out to you with questions or updates and get quick responses. Ideal Skills: - Expertise in Shopify, including its product page structure and functionality. - Strong attention to detail in order to identify and resolve issues like pricing discrepancies. - Good communication skills, especially over instant messaging, to ensure smooth project management. Looking forward to wo...

    €28 - €65
    Σφραγισμένο
    €28 - €65
    57 προσφορές

    I'm in need of an exceptionally talented web developer to design a simple, yet modern and minimalistic one-page website. Primarily, the site will be used as Menu. Key Aspects: - The website should reflect a minimalist and modern aesthetic, clean with a clear focus on the product. - Incorporate HTML, CSS, JS, and jQuery for a seamless and interactive experience. Ideal Skills and Experience: - Proficiency with HTML, CSS, JavaScript, and jQuery. - Adept at creating minimalist and modern web designs. - Clear understanding of modern web standards and best practices. - the data will currently form a JSON file so you will use the same syntax and format to preview the data

    €39 (Avg Bid)
    €39 Μέση Προσφορά
    45 προσφορές

    I require a specifically designed landing page aiming at generating leads. The target audience for this project is businesses. - Savvy with Minimalistic Design: I prefer a minimalistic design, with a clean and straightforward layout. It should be appealing visually and present content in a clear, easy-to-understand way that businesses can relate with. - Lead Generation: The landing page should be structured primarily for lead generation. I'm looking for innovative ideas to capture business leads effectively. - Prior Experience: Freelancers with previous experience in creating landing pages geared for businesses will be strongly considered. Knowing how businesses think and operate will be a great advantage for you to nail the project. - CRO Strategies: I need someone...

    €8 / hr (Avg Bid)
    €8 / hr Μέση Προσφορά
    95 προσφορές
    WordPress Theme Installation & Customization + data scrapping 6 μέρες left
    ΕΠΙΒΕΒΑΙΩΜΕΝΟ

    Looking for someone to install a specific WordPress theme, do some customization for categories, names, UI, and geographies, and then scrape specific data and enter it into the site. This has to be done ASAP

    €78 (Avg Bid)
    €78 Μέση Προσφορά
    175 προσφορές
    Twitter Bot for Viral Tweet Discovery 6 μέρες left
    ΕΠΙΒΕΒΑΙΩΜΕΝΟ

    I'm seeking a professional programmer to help me create an effective Twitter bot. The main purpose of this project is to find the most viral tweet from the previous week. Key Features: - The bot should be able to identify the tweet with the highest 'views to followers' ratio. The higher the ratio, the more viral the tweet is considered to be. - It should be able to scrape and analyze tweets from the past week. - The bot should be capable of differentiating between tweets based on their views to followers ratio and identify the 'most viral' one. Ideal Skills & Experience: - Proficient in creating Twitter bots. - Strong understanding of Twitter API and scraping tools. - Familiarity with tweet analytics and calculations. - Ability to extract and process ...

    €138 (Avg Bid)
    €138 Μέση Προσφορά
    35 προσφορές

    I'm after a skillful designer who can bring a product to life on a new landing page. Key Requirements: - Create a visually engaging landing page with the aim of selling a service/product to the general public. - The core focus should be on designing a strong and clear "Learn more about the product/service" call-to-action element. - The design needs to be intuitive, navigable, and user-friendly for viewers of different age groups and internet proficiency levels. Ideal Skills: - An eye for design that captivates and holds viewer interest. - Proven experience in designing successful product/service landing pages. - Strong understanding of user experience and the marketing funnel. - Exceptional attention to detail. - Strong communication abilities to ensure p...

    €63 (Avg Bid)
    €63 Μέση Προσφορά
    36 προσφορές
    E-commerce Web Scraping 6 μέρες left
    ΕΠΙΒΕΒΑΙΩΜΕΝΟ

    I need a web scraping expert to scrape Title, Price, star ratings, delivery window from a specific e-commerce site on a regular basis. - The scraping should cover a range of products, ideally with the ability to specify categories for tracking. - The data needs to be scraped frequently, so automation and scheduling will be crucial. - It's important that the extracted data is accurate and up-to-date as this will be used to inform pricing strategies and customer service. The ideal freelancer for this project should have: - Proficient experience in web scraping, particularly from E-commerce sites. - Proficiency in programming languages like Python or R for automation. - Good understanding of data management and quality control. - Ability to deliver a scraping tool ...

    €71 (Avg Bid)
    €71 Μέση Προσφορά
    41 προσφορές
    Shopee.co.th API Data Scraping -- 2 6 μέρες left
    ΕΠΙΒΕΒΑΙΩΜΕΝΟ

    I'm looking for a skilled professional to create an API that scrapes data from and collect all product details. Key Requirements: - I need the API to scrape product name, price, and description, as well as all other available product details on the website. - The data should be delivered in JSON format. Ideal freelancer: - Proficient in web scraping - Experienced in API development - Familiarity with or similar e-commerce websites is a plus - Ability to deliver high-quality and clean JSON data - Reliable and able to meet daily scraping requirements.

    €145 (Avg Bid)
    €145 Μέση Προσφορά
    14 προσφορές
    Shopee.co.th API Data Scraping 6 μέρες left
    ΕΠΙΒΕΒΑΙΩΜΕΝΟ

    I'm looking for a skilled professional to create an API that scrapes data from and collect all product details. Key Requirements: - I need the API to scrape product name, price, and description, as well as all other available product details on the website. - The data should be delivered in JSON format. Ideal freelancer: - Proficient in web scraping - Experienced in API development - Familiarity with or similar e-commerce websites is a plus - Ability to deliver high-quality and clean JSON data - Reliable and able to meet daily scraping requirements.

    €39 (Avg Bid)
    €39 Μέση Προσφορά
    9 προσφορές
    Blank Page Issue Resolution 6 μέρες left
    ΕΠΙΒΕΒΑΙΩΜΕΝΟ

    site is showing blank page when loading, built in codeigniter. Must have handson on code igniter

    €20 (Avg Bid)
    €20 Μέση Προσφορά
    37 προσφορές

    Hi. front page HTML is not formatted correct, backend boxes should stand under the header and the image from the YouTube video is missing on smartphone.

    €74 (Avg Bid)
    €74 Μέση Προσφορά
    1 προσφορές

    Our SaaS site () is getting a bit old. We need an experienced designer/front-end developer to completely freshen it up,We operate in the Web Scraping industry and would like our new site to stands out w.r.t. competition. We want a site that's easy on the eyes and presents our product offering better than how it is currently presented. Requirements =========== . New home page should have a section for testimonials/clients and a section for awards/review badges. . Each product (currently scrape and extract) have their dedicated page. Their illustrations need to be redone and the scrape page should have some icons/illustrations on top of each "Applications" box. . We need a new nav menu item for "Resources". The site footer...

    €43 (Avg Bid)
    €43 Μέση Προσφορά
    20 προσφορές
    Comprehensive Data Scraping & AI /ML 6 μέρες left
    ΕΠΙΒΕΒΑΙΩΜΕΝΟ

    I'm looking for a skilled professional who can help me retrieve information from various sources. The ideal freelancer should be well-versed in web scraping, especially from websites, social media platforms such as LinkedIn, publications, and news sites. This will help in gathering relevant data for building a recommendation system. Key requirements include: - Proficiency in data scraping from multiple sources - Ability to effectively scrape data from websites, social media platforms like LinkedIn, and news sites - Experience with handling and storing data in a database - Understanding of how to structure and manage data for machine learning purposes Your task will be to gather the data and store it in a database for further analysis. Having a solid background...

    €6159 (Avg Bid)
    Τοπικό Προεξέχον
    €6159 Μέση Προσφορά
    7 προσφορές