Online file converter
Convert images, documents and data formats in seconds. Files never leave your browser.
Image tools
Convert, compress and export imagesImage format converter
Convert PNG, JPG, WebP, BMP, GIF or SVG to PNG, JPEG or WebP, with quality and size control.
Image compressor
Shrink image file size with quality and width limits, compare before and after, then download.
Images to PDF
Combine JPG, PNG or WebP images into a single PDF, reorder pages and set margins.
Format conversion
Documents and data formats, both directionsWord to Markdown
Extract headings, lists and tables from .docx files as Markdown or plain text.
Markdown to HTML
Convert Markdown to clean HTML with a live preview and standalone HTML export.
HTML to Markdown
Convert HTML pages or snippets to Markdown, keeping headings, lists, links and tables.
JSON ↔ YAML
Convert JSON to YAML and back, ready for config files.
JSON ↔ CSV
Convert JSON arrays to CSV and CSV back to JSON, with flattened nested keys.
JSON ↔ XML
Convert JSON to XML and back, with a configurable root element.
Excel ↔ CSV
Turn .xlsx sheets into CSV, or build a real .xlsx workbook from CSV.
Encode & extract
Base64 and Data URL extractionFrequently asked questions
Do my files get uploaded to a server?
No. All 12 tools run inside your browser, so files never leave your device. Closing the tab ends the session.
Is it really free? Any limits?
Free, no sign-up, no daily quota. What you can process depends on device memory; ordinary documents and images up to tens of MB are fine, and very large files are better split into batches.
Does Word to Markdown keep formatting and images?
It keeps headings, paragraphs, bullet and numbered lists, tables and inline images. Images are embedded as base64, which makes the .md file larger. Hyperlinks and images inside table cells are not extracted yet.
Will Excel to CSV change long numbers or IDs?
No. IDs with leading zeros (like 0123) and numbers longer than 15 digits are written as text, so they do not turn into scientific notation or lose precision. Only the active sheet is exported.
Can I use it on a phone, and which formats work?
Yes, mobile browsers process files locally too. Images: PNG, JPG, WebP, BMP, GIF, SVG (HEIC needs converting to JPG first). Documents: DOCX. Data: JSON, YAML, CSV, XML, XLSX.
Is the output identical to the original?
Text formats keep structure and encoding. Image conversion re-encodes at the format and quality you pick, and JPEG fills transparency with white. PDF pages embed images as JPEG, so the PDF has no selectable text.