Dev Tools · 1h ago
Browser tool compresses images to exact 50KB target without server
A developer built a browser-only tool that uses binary search on JPEG quality to hit exact file size targets, solving a problem common in Indian government exam portals. The technique calls canvas.toBlob repeatedly, adjusting quality until the output matches the desired byte count. The author notes limitations like slow performance on large images and lack of support for other formats.
Meridian48 take
The approach is clever but highlights how arbitrary file-size limits create unnecessary engineering workarounds.
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Compressing an image to exactly 50KB in the browser, with no server →
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