Supported file formats
Every format the 27 tools on this site read and write, what each one is actually for, and which conversions exist today. If a format is not on this list, we cannot convert it yet.
Documents
| Format | Extensions | Converts to |
|---|---|---|
| PDFPortable Document Format | .pdfCarries its own fonts and page layout, so it looks identical everywhere. The right format for anything final. |
DOCX, JPG, PDF, PDF, PDF, TXTAccepted from DOCX, JPG, PNG, PDF, PDF, PDF, TXT |
| DOCXWord document | .docx, .doc, .rtf, .odtEditable text with styles, tables and images. Layout can move when the reader has different fonts installed. |
PDFAccepted from PDF |
| TXTPlain text | .txt, .md, .logJust the words, in UTF-8. Nothing to break, and nothing to carry formatting. |
PDFAccepted from PDF |
Images
| Format | Extensions | Converts to |
|---|---|---|
| JPGJPEG image | .jpg, .jpegLossy compression tuned for photographs. Small files, no transparency, opens absolutely everywhere. |
PDF, PNG, WEBPAccepted from PDF, PNG, HEIC, WEBP |
| PNGPNG image | .pngLossless with transparency. The right choice for screenshots, logos, diagrams and anything you will edit again. |
PDF, JPG, WEBPAccepted from JPG, WEBP |
| WEBPWebP image | .webpPhotographs and transparency in 25 to 40 percent fewer bytes than JPG or PNG. Supported by every current browser. |
JPG, PNGAccepted from JPG, PNG |
| HEICHEIC image | .heic, .heifWhat an iPhone camera saves. Efficient, and refused by a lot of software outside Apple, which is why people convert it. |
JPG |
| GIFAnimated GIF | .gifShort looping animation with at most 256 colours per frame and no audio. Universally supported and heavy. |
Output format onlyAccepted from MP4 |
Video and audio
| Format | Extensions | Converts to |
|---|---|---|
| MP4MP4 video | .mp4, .m4vThe default video container. Plays on every phone, TV, browser and editor worth using. |
MP3, GIFAccepted from MOV |
| MOVQuickTime video | .mov, .qtWhat iPhones and Apple software record. Usually holds the same video as an MP4 in a less portable box. |
MP4 |
| MP3MP3 audio | .mp3Lossy audio that every device on earth can play. 192 kbps is transparent for speech and most music. |
Output format onlyAccepted from MP4, WAV |
| WAVWAV audio | .wav, .wave, .aiffUncompressed audio, roughly 10 MB per minute. Right for recording and editing, impractical for sending. |
MP3 |
Spreadsheets and data
| Format | Extensions | Converts to |
|---|---|---|
| CSVComma separated values | .csv, .tsvPlain text tables. Read by everything, standardised by nobody, which is why careful parsing matters. |
JSON, XLSXAccepted from JSON, XLSX |
| XLSXExcel workbook | .xlsx, .xls, .odsSheets, types, formulas and formatting in one file. Opens in Excel, Google Sheets, Numbers and LibreOffice. |
CSVAccepted from CSV |
| JSONJSON data | .jsonStructured data for programs rather than people. Nested, typed and awkward to read in a spreadsheet. |
CSVAccepted from CSV |
Archives
| Format | Extensions | Converts to |
|---|---|---|
| ZIPZIP archive | .zipMany files in one, compressed where compression helps. Every operating system opens one unaided. |
FilesAccepted from Files |
| FilesAny file type | anyThe ZIP builder accepts anything, because an archive does not care what it is carrying. |
ZIPAccepted from ZIP |
Why the format matters more than the quality slider
People often ask which setting gives the best result, when the format is the decision that matters. A photograph in PNG is large for no benefit. A screenshot in JPG is soft around the text for no benefit. A layout in DOCX moves when the reader lacks your fonts. Picking the target format for the job, and only then worrying about quality, avoids almost every disappointing conversion.
Cannot see the format you need?
Formats get added when people ask for them, so tell us what you were trying to convert and what you needed it for. Requests that describe the goal rather than just the extension are the ones that turn into tools, because the goal usually points at a better route than the one you had in mind.
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