Private file tools, built for the browser

Supported formats.
One clear workflow.

Convert, compress, inspect, and export files with batch controls and verified results—without surrendering supported files to a remote service.

Explore compatibility
✓ No signup✓ No watermark✓ Per-file outputs
Private for supported formats — processed in your browser

Convert supported files

Runs on your device

Drop supported files here

Batch files can each use a different output. Nothing uploads for local conversions.

Working inputs include camera RAW, browser-local audio/video, PDF, CBZ/CBR comics, office documents, ebooks, markup, 3D models, structured text, images, and archives.
01

Local by default

Supported files are encoded in browser memory, not uploaded.

02

Validated outputs

Real signatures are checked before downloads are enabled.

03

Mixed batch queue

Give every file its own output and keep successful results.

How a browser-local converter actually works

Most online converters are upload services: your file travels to a server, is processed there, and a download link comes back. Novus Convert takes the opposite approach. The conversion engines — an FFmpeg build for audio and video (including GIF/APNG animation routes), LibRaw for camera RAW files, pdf.js and pdf-lib for documents, SheetJS for spreadsheet interchange, libarchive for RAR and 7-Zip, Open CASCADE for CAD geometry, @jsquash for AVIF/JXL, and hand-written encoders for images and meshes — are compiled to WebAssembly and run inside your browser tab. The file you pick never crosses the network, which is why there is no upload progress bar, no file-size pricing tier, and no server queue.

Every export is verified before the download unlocks: the engine checks that the output bytes carry the real signature of the format you asked for, so a failed encode can never be saved as a broken file with the right extension. Formats the engines cannot genuinely process are documented as reference guides instead of being offered as fake conversions, and the format directory records which is which. Every count and every route below is read from that same capability manifest when this page is built, so nothing here can advertise a conversion your device cannot actually run.

Format catalog

Start here, or browse every format

Browse the format directory →
255working inputs
2400verified routes
Browse every working conversion →

Popular conversions

12 of 2400 routes

A hand-picked shortlist, not a usage ranking — nothing here measures what you convert. Each route is resolved against the conversion registry when this page is built, so a card can never outlive its converter.

Recently added formats

12 of 255 working inputs

The newest arrivals, across the Vector & CAD, Data categories. Every one of them converts on your device today; the dated record of each release is in the changelog.

Every category

274 formats in 9 categories

Each count is read from the capability manifest, so a category cannot advertise more than the engines can run. Follow any card into that category in the full directory.