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Formats we repair

Every format below gets a real repair, tested on damaged files. For formats we can't repair yet, the free check still tells you what's wrong and what to try.

Documents

Word document .docx Rebuild a missing or damaged ZIP index; Recover every readable part, including half-written ones; Close broken XML so Word can parse it. Excel workbook .xlsx Rebuild a damaged ZIP index; Recover each surviving worksheet; Rebuild a missing workbook index (xl/workbook.xml) and sheet list. PowerPoint presentation .pptx Rebuild a damaged ZIP index; Recover every intact slide and its pictures; Remove lost slides from the slide list so PowerPoint opens the rest. PDF document .pdf Remove junk data before the PDF header; Rebuild the cross-reference table and end-of-file marker; Recover a missing document catalog and re-link orphaned pages.

Images

JPEG photo .jpg Remove junk data before the start of the image; Restore a damaged start marker; Close cut-off photos so every viewer opens them (the missing bottom shows grey). PNG image .png Restore a damaged PNG signature; Correct wrong chunk checksums; Re-pack surviving rows of cut-off images into a valid file. GIF image .gif Add the missing end marker so all complete frames play. BMP image .bmp Fix the file size in the header; Fill missing pixel rows so the image opens. WebP image .webp Correct the container size; Remove trailing junk data.

Audio & video

MP4 video .mp4 Correct the size of cut-off video data so it plays up to the cut; Remove broken or junk data after the video; Check the index, tracks and length. QuickTime video .mov Correct the size of cut-off video data; Remove junk data after the video; Check the index, tracks and length. MP3 audio .mp3 Find and remove damaged sections; Keep every good audio frame and the song tags. WAV audio .wav Rebuild the header with the real audio length; Recover cut-off recordings up to the cut; Give a free 10-second preview so you can hear the result.

Data & text

CSV file .csv Remove NULL bytes; Convert mis-encoded characters to UTF-8; Close unclosed quotes. JSON file .json Remove trailing commas; Replace single quotes with double quotes; Quote property names. XML file .xml Close unclosed tags; Remove stray closing tags; Escape bare "&" characters. Text file .txt Convert UTF-16 to UTF-8; Fix mis-encoded accented characters; Remove NULL bytes.

Archives & databases

ZIP archive .zip Find every file by scanning for its header, even without an index; Recover partly written files up to the damage; Check every file's checksum (CRC). SQLite database .sqlite Restore a damaged header; Complete a cut-off final page; Run SQLite's own integrity check. TAR.GZ archive .tar.gz Decompress everything up to the damage; Keep every complete file inside; Rebuild a clean, valid .tar.gz.

Checked, but not repaired yet

RAR, 7-Zip, Outlook PST, AutoCAD DWG and old Office files (.doc, .xls, .ppt) use closed formats. The free check confirms whether the file is genuine and tells you which official tool can repair it. We'd rather tell you that honestly than charge you for a repair we can't do well.