Your files never leave your device

File tools that run entirely in your browser

Convert, compress and inspect files without uploading them anywhere. Everything happens locally on your computer — private by design, fast, and free without limits.

All tools

Images5

.heic → .jpg
HEIC to JPG
Convert iPhone photos to JPG or PNG that open anywhere.
Images
img −80%
Image Compressor
Shrink JPG, PNG and WebP file size right on your device.
Images
.webp → .jpg
WebP & AVIF to JPG
Turn modern web images into universally supported JPG or PNG.
Images
.png → .webp
PNG & JPG to WebP
Make images 30–50% lighter for your website.
Images
exif ✕
EXIF Remover
Strip GPS location and camera metadata from photos.
Images

Design2

.psd → .png
PSD to PNG
Open a Photoshop file and export a flattened PNG — no Photoshop needed.
Design
.svg → .png
SVG to PNG
Rasterize vector graphics at any resolution you choose.
Design

3D Printing2

.stl → .obj
STL to OBJ
Convert 3D-print models between the two most common mesh formats.
3D Printing
.obj → .stl
OBJ to STL
Prepare any 3D model for the slicer and printing.
3D Printing

Documents1

pdf + pdf
Merge PDF
Combine several PDFs into one — without uploading them.
Documents

Developers2

yaml ⇄ json
YAML ⇄ JSON
Convert config files both ways with validation and pretty-printing.
Developers
json ⇄ csv
JSON ⇄ CSV
Turn API responses into spreadsheets and back.
Developers

Security1

sha-256
File Hash Checker
Verify SHA-256, SHA-1 or MD5 checksums of any file locally.
Security

Why local tools are better

Private by designNothing is uploaded, so nothing can be leaked, stored or sold. Safe for contracts, medical files, IDs and client work.
No waiting for uploadsA 200 MB file converts as fast as your computer allows — there is no server queue and no upload progress bar.
Free without limitsServer-based converters charge because servers cost money. Your device does the work here, so there is nothing to meter.
Works on a planeOnce a tool page has loaded, most tools keep working even if your connection drops.

How is this possible?

Modern browsers can run near-native code through WebAssembly and process images, 3D models and documents with the same libraries desktop apps use. LocalConvert packages those open-source libraries into small web pages: your browser downloads the tool once, then all processing happens on your own CPU. You can verify this yourself — open your browser's network tab while converting: after the page loads, no data is sent anywhere.

Frequently asked questions

Are my files really not uploaded?

Correct. Files are opened with the browser's File API and processed in memory on your device. The site has no upload endpoint at all — there is no server that could receive your files even by accident.

Is there a file size limit?

Only your device's memory. Most laptops handle files of several hundred megabytes without trouble. Very large files may be slow on old phones, since your own processor does the work.

Do I need to create an account?

No. There are no accounts, no email walls and no watermarks. Open a tool, drop a file, download the result.