I've been frustrated with image tools that upload your files to their
servers. You never really know what happens to your photos after that.
So I built RelahConvert — a completely free image tool suite that runs
100% in your browser. No uploads, no servers, no accounts required.
What it does
- Compress images — reduce file size while keeping quality
- Resize images — by pixels or percentage
- Convert between JPG, PNG and WebP formats
- Convert images to PDF
All 10 tools are free and your files never leave your device. Everything
runs using the browser's built-in Canvas API.
How it works technically
Instead of sending files to a server, I use the HTML5 Canvas element to
process images directly in the browser. The user picks a file, Canvas
reads the pixel data, applies the transformation, and outputs the result
— all locally.
For the PDF conversion I used a lightweight JS library to bundle images
into a proper PDF structure without any server involvement.
What's next
I'm adding 30 more tools over the next few weeks including:
- GIF, BMP and TIFF conversions
- Crop, rotate and flip
- Grayscale, brightness and contrast adjustments
- Watermark tool
- EXIF metadata remover
Try it
RelahConvert — completely free, no account needed.
Would love any feedback from the dev community on the approach or
any tools you'd like to see added.
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