100% local · No uploads · No account needed

Tool directory

Tools for files and digital content
Right in your browser.

Browse the categories and open the right studio with focused functions for your task.

Tool directory

Specialized studios for every task

Open the right studio for files, documents, media, graphics, fonts or tables and work with focused options.

Convert files & Compress filesConvert individual files or complete batches to compatible target formats. Reduce images, audio, video, PDFs and archives with format-specific settings.PDF StudioMerge or split PDFs, reorder pages, or add images and blank pages.OCR StudioRecognise text in images and PDFs and export it to several document formats.ORM/ARM Texture PackerPack occlusion, roughness, metallic and optional alpha maps into a single texture.Font StudioInspect fonts, compare glyphs and create webfont kits locally.Sheets & data StudioFilter, compare and merge tables, then export them to new formats.File InspectorInspect file signatures, media properties, checksums and duplicate files.Batch File RenamerRename many files together with rules, numbering and a safe preview.Color & Palette ToolExtract dominant image colors and export palettes as CSS or JSON.Audio StudioEdit multiple audio tracks, trim clips, mix effects, analyze and export your complete mix locally.Encrypt filesEncrypt one file or combine several files in one protected .lflvault container – entirely in your browser.More toolsFind more specialised tools in the complete tool directory.

No file is uploaded — all processing happens in this tab.

A clear workflow

From file to result, without detours

LocalFileLab guides you through a focused local workflow and only shows options that suit your file and goal.

Choose a tool

Start with a file category or open the matching studio directly.

Work locally

Add your file and adjust the settings available for it.

Save the result

Review the result and save it directly to your device.

Truly local

File contents are processed exclusively in your browser's memory.

Refreshingly simple

Choose a tool, add files, set the relevant options and download the result immediately.

Open to inspection

The source code is available for inspection. Commercial use requires the copyright holder's permission.

Built for modern browsers

Progressive Web APIs with clear fallbacks for Chrome, Edge, Firefox and Safari.

Formats and file types

Explore by file type

Choose a category, review supported formats, and open the tool that fits your file.

Images

APNG, AVIF, BMP, GIF, HEIC, HEIF, ICO, JPEG XL, JPG, PBM, PGM, PNG, PNM, PPM · +6

Documents

DOCX, ODT, PDF, PPTX

Spreadsheets

Apple Numbers, DBF, DIF, FODS, ODS, PRN, SYLK, XLS, XLSB, XLSM, XLSX

Text & data

.env, CONF, CSV, HTML, INI, JSON, JSON Lines, LFLSTUDIO, LOG, Markdown, NDJSON, Properties, RTF, TOML · +5

Audio

AAC, AC-3, AIFF, ALAC, AMR, AU, CAF, E-AC-3, FLAC, M4A, MKA, MP3, OGG, Opus · +5

Video

3G2, 3GP, ASF, AVI, FLV, M2TS, M4V, MKV, MOV, MP4, MPEG, MPEG-TS, MTS, MXF · +3

Fonts

EOT, OTF, TTF, WOFF, WOFF2

3D models

3MF, COLLADA, GLB, glTF, OBJ, OFF, PLY, STL, X3D

E-books

CB7, CBR, CBT, CBZ, EPUB, FB2, FB2.ZIP

Privacy by design

Your files are yours. Full stop.

LocalFileLab has no upload endpoint and stores no file contents. Temporary results are discarded by the browser when the tab closes.

0 bytes uploadedNo registrationSource code available

View license & source

Frequently asked questions

Are my files really never uploaded?

Yes. Conversion, compression, PDF tools and OCR run on your device with JavaScript, WebAssembly and browser APIs.

Why is a format unavailable in my browser?

Some media formats depend on browser and operating-system codecs. LocalFileLab explains the limitation instead of quietly sending your file to a server.

Is there a file-size limit?

There is no upload limit. Very large files can still exceed your device's available memory.

For the best results, use a current browser version.