ToolkitLoop is a free toolkit of 30 online tools that run entirely in your browser. No sign-ups, no uploads — your files and data never leave your device.
It covers everyday needs: tip, percentage, mortgage and calorie calculators; unit, currency and decimal-to-fraction converters; QR code generator & scanner; barcode generator; image compressor & resizer; and developer utilities like JSON formatter/validator, Markdown viewer, and an M3U8 player.
Private by design, free forever, no account wall.
- 30 free online tools, no sign-up or install required
- Runs 100% in your browser — files and data never leave your device
- Calculators, converters, QR & barcode tools, image tools, JSON/Markdown dev utilities
- Free forever, private by design
- Calculate tips, split bills, and estimate mortgage payments instantly
- Compress images to an exact file size (e.g. 100KB) before uploading
- Generate permanent QR codes and barcodes locally, no account needed
- Validate and format JSON without sending data to a server


Keeping the image compressor and JSON formatter entirely in the browser is the right call if people are resizing files they do not want uploaded. Hitting an exact target size like 100KB is the feature I would actually use before a form upload. Does that path only lower JPEG quality, or does it also resize dimensions when quality alone cannot reach the target?


Keeping the image compressor and JSON formatter entirely in the browser is the right call if people are resizing files they do not want uploaded. Hitting an exact target size like 100KB is the feature I would actually use before a form upload. Does that path only lower JPEG quality, or does it also resize dimensions when quality alone cannot reach the target?
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