Filewhisk is a collection of free file tools that run entirely inside your web browser.
Most free file tools work the same way: upload your file, a server processes it, you download the result. That means your file sits on someone else's disk, and the operator imposes file size caps, daily limits and sign-up walls to cover their costs. It also means a queue when their servers are busy.
Filewhisk uses the Canvas API and WebAssembly to do the same work on your own device instead. No upload, no size limit, no account, no waiting in line. You don't have to take that on faith either: open any tool, disconnect from the internet, then drop a file in. It still works, because nothing ever left your machine.
One tool worth calling out specifically: compress an image to an exact file size target, not just a quality slider. Forms that demand "under 200KB" or "under 2MB" are common - passport applications, government portals, job application uploads - and guessing a JPEG quality percentage until you land under the limit is tedious. This tool takes the KB target directly and iterates the encoding until it fits, without you touching a slider.
42 tools available today, including:
- Compress an image to an exact file size target (KB or MB), with ready-made presets for common limits like 100KB, 200KB, WhatsApp and Discord
- Resize, crop, rotate, convert between PNG, JPG, WebP and AVIF in either direction
- HEIC to JPG for iPhone photos, SVG to PNG at any resolution
- Passport and visa photo maker with country-specific size and head-height guides (US, UK, Schengen, India)
- Social media image resizer that exports every platform's size (Instagram, YouTube, X, LinkedIn, Facebook) from one focal point in a single pass
- Favicon generator and full app icon set generator
- EXIF metadata removal, watermarking, a meme maker, an image combiner/grid splitter, and a pixel censoring tool
PDF, video and audio tools are being added next as the project grows. Everything is free and ad-supported, with no account required for any tool.
