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The full toolbox.

Five converters, one rule: your files never leave your machine. Every engine below runs 100% inside your browser — no servers, no uploads, no accounts.

01 / Document Converterlive

Document Converter

Word, PDF, Excel, PowerPoint, EPUB, Markdown and more.

Text-based document conversion running entirely in your browser. Layout-heavy files are simplified: text, headings, tables and lists are preserved.

engine: jsPDF · pdf.js · mammoth · SheetJS · JSZip

Open Document Converter

supported operations

  • Word (DOCX) → PDF
  • PDF → Word (DOCX)
  • Excel (XLSX) → PDF
  • PDF → Excel (XLSX)
  • PowerPoint (PPTX) → PDF
  • PDF → PowerPoint (PPTX)
  • TXT → PDF
  • PDF → TXT
  • EPUB → PDF
  • PDF → EPUB
  • HTML → PDF
  • PDF → HTML
  • Markdown → PDF
  • PDF → Markdown
  • CSV → Excel (XLSX)
  • Excel (XLSX) → CSV
  • ODS ↔ XLSX
  • RTF ↔ DOCX
02 / Audio Converterlive

Audio Converter

Decode anything your browser plays, encode to MP3 or WAV.

Uses the Web Audio API to decode your file, then re-encodes it on-device. MP3 output is 192 kbps stereo; WAV is lossless 16-bit PCM.

engine: Web Audio API · lamejs MP3 encoder

Open Audio Converter

supported operations

  • MP3 → WAV
  • WAV → MP3
  • OGG → MP3 / WAV
  • M4A / AAC → MP3 / WAV
  • FLAC → MP3 / WAV
  • Opus → MP3 / WAV
03 / Video Converterlive

Video Converter

Re-encode video to WebM or MP4, scale, mute, or rip the audio.

Plays your video through a canvas + MediaRecorder pipeline and records a new file. Conversion runs in real time (a 1-minute clip takes about a minute).

engine: Canvas · MediaRecorder · Web Audio API

Open Video Converter

supported operations

  • MP4 / MOV / MKV / AVI → WebM
  • WebM → MP4 (when your browser supports H.264 recording)
  • Scale resolution: 100% / 75% / 50%
  • Mute: strip the audio track
  • Extract soundtrack → MP3
04 / Archive Toollive

Archive Tool

Create ZIP archives and extract them — fully offline.

Bundle multiple files into a compressed ZIP, or open an existing ZIP and pull out exactly the files you need. Nothing is ever uploaded.

engine: JSZip

Open Archive Tool

supported operations

  • Create ZIP from multiple files
  • DEFLATE compression (adjustable level)
  • Extract ZIP: list all entries
  • Download individual files from an archive
  • Download all extracted files at once
05 / Image Converterlive

Image Converter

Convert, compress and resize images with the Canvas API.

The original ConvertLab tool. Re-encodes images on a canvas with live preview, quality slider and proportional resize.

engine: Canvas API

Open Image Converter

supported operations

  • JPG ↔ PNG ↔ WebP
  • GIF / BMP → JPG / PNG / WebP
  • Compress: quality slider 10–100%
  • Resize: proportional scale 10–100%
  • Live before/after size comparison