Dev tools · alternatives · 2026

24 alternatives to Oyyi

Free to Use Api For Image Conversion / Optimization and more

Below are 24 products that do a similar job, ranked by how close each is in meaning and then by launch-day votes. Oyyi launched in 2021; newer entries below may have overtaken it.

1. 1
   Imageyeti ▲94

   AI powered image generation tool and API

   2022 · its alternatives →

2. 2
   GPT Image API▲487

   Bring GPT-4o quality images to your apps

   2025 · developers.openai.com · its alternatives →

3. 3
   Optidash▲152

   The world's first AI-powered image optimization API

   2020 · optidash.ai · its alternatives →

4. 4
   Convertfiles.ai▲424

   Convert your images online for free

   2023 · convertfiles.ai · its alternatives →

5. 5
   Generated Photos API▲362

   Generate worry-free, diverse models on-demand using AI

   2019 · generated.photos · its alternatives →

6. 6
   OG IMPACT▲175

   A free, open source API for generating social media images

   2020 · ogimpact.sh · its alternatives →

7. 7AU
   A url-based API for images (my weekend project)▲115

   2013 · mebe.co · its alternatives →

8. 8
   AI Ultra Editing by Thumblify▲163

   Hey I've launched ThumblifyAI - an AI-powered thumbnail generator that turns your ideas into eye-catching thumbnails in seconds. If you’re a creator, you know the struggle: Great content ignored because of weak thumbnails Canva takes time Photoshop? Too complex That’s why I built ThumblifyAI. No design skills. Just type → result. Built for Creators who want to grow - without wasting hours on design. And the best part? As a welcome gift, you can create a thumbnail for free — no credit card required → https://thumblifyai.com Special 24-Hour Offer: Use code 7WC8JPER to get 50% OFF…

   2025 · thumblifyai.com · its alternatives →

9. 9
   Image Slider Generator▲84

   Quickly create and customize image sliders for your website

   2023 · imageslidergenerator.shahmirfaisal.com · its alternatives →

10. 10
    Free AI Image▲60

    Generate realistic images with AI for free

    2023 · its alternatives →

11. 11JI
    Jpeg.io – Convert any major image format into a highly optimized JPEG▲122

    Convert any major image format into a highly optimized JPEG

    2016 · jpeg.io · its alternatives →

12. 12
    CLIP API by Booste▲126

    Use OpenAI's newest image classifier with one line of code.

    2021 · booste.io · its alternatives →

13. 13
    QuarkIQL▲74

    Create custom images and requests in only a few clicks

    2023 · quarkiql.com · its alternatives →

14. 14
    ogsupa▲105

    An open-source open graph image generator

    2021 · github.com · its alternatives →

15. 15
    Photoshot▲90

    An open-source AI avatar generator

    2022 · photoshot.app · its alternatives →

16. 16
    A fast, privacy-first image converter that runs in browser▲48

    Hey HN I built ImageConverter.dev because I got tired of “free” image converter sites that force uploads, or throttle conversions. So I made a tool that runs 100% client-side — meaning your images never leave your device. It’s built for speed, simplicity, and privacy. What it does Convert images between JPG, PNG, WebP Works offline once loaded (PWA support) How it works It uses the Canvas API and WebAssembly to handle conversions directly in the browser. There’s no upload, no tracking, no server costs, and it’s fast even on mid-range devices. Why I built it I wanted an instant, no-ads,…

    Oct 2025 · imageconverter.dev · its alternatives →

17. 17
    Artimator▲78

    Free AI art generator

    2023 · ai-image-generator.artimator.io · its alternatives →

18. 18
    Toonly Ai - Ai photo Converter▲9

    AI Photo to Cartoon – Transform Pictures in Seconds

    2025 · toonlyai.com · its alternatives →

19. 19
    IMG Quest▲7

    An open-source API to generate Open Graph images

    2022 · its alternatives →

20. 20
    GPT-Image-1 api▲8

    Faster and Cheaper GPT-Image-1 Image generation api

    2025 · gptimage2api.net · its alternatives →

21. 21
    An open source API for generating social media images▲8

    A free API for generating social media images. Contribute to chrisvxd/og-impact development by creating an account on GitHub.

    2020 · github.com · its alternatives →

22. 22
    Reeviw▲6

    Free online image converter & optimizer

    2025 · reeviw.com · its alternatives →

23. 23
    imageapiai.com▲3

    AI Image Generation API for developers

    Aug 2026 · imageapiai.com · its alternatives →

24. 24
    I made an API to generate social media images▲11

    A free API for generating social media images. Contribute to chrisvxd/og-impact development by creating an account on GitHub.

    2020 · github.com · its alternatives →

Ranked by how close each launch is in meaning, then by votes. Prices were read from each product’s own site when checked and can change. Refine with your own description →