Watermark API – $0.01/image, 10x cheaper than Cloudinary

[VladVladikoff]

I don’t get it? Wouldn’t figuring out a simple FFMPEG command to watermark an image (or video) take less time than integrating with an API to do it? Plus if you had to do a lot of images it would be much faster to work locally than having to ship the images remotely somewhere. -someone who does this a lot, specifically for videos.

[lembergs]

You're 100% right for your use case. FFMPEG locally will always be faster than shipping images over the network.

But we're solving different problems. You're working with local files you already have. I'm targeting apps where images are already living in S3/R2 somewhere — user uploads a product photo, SaaS needs to watermark it before displaying, that kind of thing.

In those cases the alternative isn't "run FFMPEG locally" — it's download from S3 to your server, run Sharp or FFMPEG, upload back to S3, manage worker queues when traffic spikes, handle retries when things fail. Basically all the plumbing around the actual watermarking.

For your workflow this API makes zero sense. Local batch processing with FFMPEG is objectively better. No argument there. But if you're building a SaaS where users are uploading images and you need to watermark them server-side, would you rather write all that infrastructure or pay a penny per image and ship your actual product features faster? That's the bet I'm making.

Might be totally wrong! But "pay someone to handle the boring infrastructure" has worked for Stripe, Twilio, AWS Lambda, etc. Same play here but for image processing.

[lembergs]

Appreciate everyone's honest feedback here. The consensus is clear: watermarking isn't painful enough to justify an API, especially when Sharp + ChatGPT solves it in 10 minutes, and the no-code market I described doesn't actually want API integration.

This was a 7-hour validation experiment and it worked — I learned the idea doesn't have product-market fit. Killing it now rather than spending weeks marketing something nobody wants.

Thanks for the reality check :)

On to the next one.

[razingeden]

There is a market for your idea: (see imgproxy)

[cr125rider]

I even pay through an API? That’s interesting. I was wondering how difficult it was to setup payments vs. the actual service.

[lembergs]

I built a dead-simple watermarking API because existing solutions (Cloudinary, imgix) are overkill and expensive for developers who just need to slap a logo on images.

- $0.01/image or $19/mo unlimited - 50 free images to test - 5-minute integration - API-first, no dashboard bloat

Built in 7 hours. Looking for feedback from developers who've struggled with this problem.

Try it: https://api-production-caa8.up.railway.app/docs ```

## Additional Context for Discussion

If the post gains traction, be prepared to discuss:

### Technical Details

- Built with Node.js, Express, Sharp for image processing - Uses Cloudflare R2 for storage (S3-compatible, cheaper than S3) - PostgreSQL for tracking usage and credits - Stripe for payments - Deployed on Railway.app

### Why This Exists

- Cloudinary charges $0.10-0.15 per image for watermarking - imgix starts at $199/month for basic features - Many developers just need simple batch watermarking - Existing solutions require complex dashboards and setup

### Performance

- Watermarks 1,000 images in under 2 minutes - Batch processing up to 100 images at once - Returns ZIP files for batch downloads - All processing happens server-side

### Pricing Comparison

- *Our API:* $0.01/image or $19/month for 2,500 images - *Cloudinary:* $0.10-0.15/image (10-15x more expensive) - *imgix:* $199/month minimum (10x more expensive for similar volume)

### Use Cases

- E-commerce sites watermarking product photos - Photographers adding logos to portfolios - Social media managers branding images - Developers building apps that need image watermarking

[romanderyo]

Honest question: does integrating with this API require more code than just using Sharp directly? Especially now that anyone can ask an AI to write the watermarking script for them.