What is taking up the space?
Reads a folder on your own machine and reports the biggest files, the formats wasting room, and roughly how much converting would give back.
- Add
- Adjust
- Make
- Keep
How to use this tool
- Add your files — drag them onto the page or choose them. They stay on your device.
- Add the files for a pre-publication audit.
- The audit walks everything the file carries — metadata, embedded thumbnails, textual secrets, size and format risks — and returns a single plain-language verdict per file with the findings behind it.
- Press “Process files” and download the results, individually or as one ZIP.
About this tool
Reads a folder on your own machine and reports the biggest files, the formats wasting room, and roughly how much converting would give back. Everything is analysed and produced on your own device — nothing is uploaded anywhere, and you can verify it: the tools keep working even offline.
Privacy & limitations
The audit is deterministic pattern and metadata analysis, not machine judgment: it ranks what it can measure, and says so instead of inventing a safety score.
Last updated:
Frequently asked questions
How do I find what is using my disk space?
Look at formats, not just at size. A folder of PNG screenshots or WAV recordings is usually several times larger than it needs to be, and converting rather than deleting gets the space back without losing anything you wanted to keep.
Are the estimates accurate?
They are estimates and are labelled as such. They come from the format and the file size, using typical ratios: about two thirds off a PNG photograph moved to WebP, about a third off a JPEG. Your files will differ, and the only exact answer is to convert one and look.
Does it upload or change my files?
Neither. It reads names and sizes through the browser’s folder access, which asks your permission first, and reports what it found. Converting anything is a separate, deliberate step.
Why does it not work in my browser?
It needs the File System Access API, which Chrome, Edge and Opera support and Safari and Firefox do not yet. Without it a page cannot read a folder at all, which is a reasonable thing for a browser to be careful about.