KLD–01 / UNIVERSAL FILE CONVERTER

One file in. Any shape out.

Kaleido converts between 70+ formats — images, audio, video, documents, fonts, and a long tail of things you didn't know needed converting — entirely on your own device. Nothing you drop here is ever uploaded.

Start converting See what's possible
PNG MP3 PDF OBJ ZIP
FIG. 01 — FORMAT DECOMPOSITION 1 INPUT → N OUTPUTS
QUICK CHECK

Can Kaleido handle your file?

Search live against every format currently loaded — not a marketing list.

EXAMPLES

A sample of what's possible

Not exhaustive — use the quick check above for a definitive answer on any single format.

PNG WEBP
SVG PNG
GIF PNG
ICO PNG
XCF PNGGIMP files
WAV MP3
FLAC OGG
MIDI WAV
XM WAVtracker modules
MP4 WEBM
MOV GIF
MP4 MP3extract audio
MD PDF
DOCX PDF
HTML PDF
JSON YAML
TTF WOFF2
CSV SQLITE
LESS CSS
JSON TOML
ASE PNGAseprite files
SB3 HTMLScratch projects
OBJ GLTF
MIDI SVGsheet music

...and the deep cuts

Kaleido's handler library covers a surprising amount of ground for tinkerers, modders and speedrunners.

SCHEMATIC NBTMinecraft structures
WORLD MAPTerraria world saves
WAD PREVIEWDoom level data
BSOR VIDEOBeat Saber replays
FEN JSONchess positions
TEXT SPEECHany string, spoken aloud
70+ Formats supported
20+ Conversion engines
0 Files ever leave your device
100% Open source, GPLv2
THE CONVERTER

Drop a file. Pick a format. Done.

Click to add your file

or drag and drop it here

Convert from

Convert to

WHY THIS EXISTS

Built different, on purpose.

01

Runs entirely offline

Every conversion happens locally via WebAssembly. Nothing you drop here is ever sent anywhere.

02

Format-agnostic

Convert between wildly different mediums — images to audio, documents to 3D models, and everything between.

03

Zero setup

No accounts, no installs, no waiting rooms. Drop a file, pick a format, and you're already done.

04

Open source

Fully auditable and GPL-licensed, built in the open by a community of contributors.

05

No file limits

There's no server quota, no daily cap and no size ceiling — your own device is the only limit.

06

Built for tinkerers

A pluggable handler architecture makes it straightforward to add support for new formats.

THREE STEPS

About as simple as it gets.

  1. 01

    Drop your file

    Drag anything onto the canvas, paste it from your clipboard, or click to browse.

  2. 02

    Pick a format

    Choose what you're converting from and to — we'll figure out a route between them.

  3. 03

    Download instantly

    Get your converted file back in seconds. No queue, no processing fee, no wait.