Files

File and archive tools

Every file tool on OpenTools. ZIP archives, checksums, renaming and file inspection, run entirely in your browser with nothing uploaded.

All 34 of them are listed below. Each one runs inside this tab, so nothing you open or type is uploaded — see the proof.

• AES-GCM file decryptorDecrypt an .enc file back to its original bytes using your password.
• AES-GCM file encryptorEncrypt any file locally with authenticated 256-bit AES-GCM and PBKDF2 password derivation.
• Base64 file decoderDecode strict standard Base64 into a downloadable file.
• Base64 file encoderEncode one selected file as standard padded Base64.
• Binary-file viewerDisplay a bounded byte window as eight-bit binary groups.
• Bulk file renamerReplace literal text in selected filenames and download copied bytes.
• Data-URI file extractorDecode a strict Base64 data URI into a downloadable file.
• Data-URI file makerTurn one file of up to 16 MiB into a Base64 data URI you can paste into CSS, HTML or a script, read in your browser with its media type kept in the prefix.
• Directory-tree generatorBuild a sorted text tree from folder-picker relative paths.
• Duplicate-file finderGroup selected files by exact byte length and SHA-256 digest.
• Empty-file finderList selected files whose byte length is exactly zero.
• File checksum verifierCalculate a cryptographic digest and compare it with an expected hexadecimal value.
• File chunk joinerJoin selected chunks byte-for-byte in picker order.
• File chunk splitterSplit one file into numbered byte-exact parts at the chunk size you set, up to 1,000 pieces. The file is read in this tab and every part downloads separately.
• File extension changerChange the extension on downloaded copies of the files you pick, in your browser. The bytes are untouched, so this relabels a file rather than converting it.
• File hash calculatorCalculate SHA-256, SHA-384, or SHA-512 locally.
• File list to CSVExport selected file paths and File API metadata as strict CSV.
• File metadata viewerList File API name, relative path, byte size, MIME hint, and modification time.
• File X-rayDrop any file and see what is hidden inside it, from GPS coordinates to text you deleted, then remove it.
• File-signature inspectorInspect leading bytes against a disclosed set of common signatures.
• File-size analyzerRank selected files by byte size and calculate totals.
• Filename case converterConvert filename stems to lower, upper, kebab, snake, or title case.
• Filename cleanerCreate safe, compact download names while preserving extensions.
• Folder-manifest generatorCreate a JSON manifest with relative paths, metadata, and SHA-256 digests.
• Gzip file compressorCompress one file into the standard gzip format with the browser Compression Streams API.
• Hex viewerDisplay a bounded file window with offsets, hexadecimal bytes, and ASCII.
• Hex-patch generatorCompare two equal-length files and list byte replacement instructions.
• Image EXIF & GPS metadata inspectorInspect camera model, exposure settings, software tags, and GPS coordinates embedded inside image files.
• Image EXIF & metadata scrubberRemove EXIF, XMP, IPTC and comment blocks — GPS coordinates, camera serials, timestamps and thumbnails — from JPEG and PNG files before sharing.
• Large-file finderList selected files at or above an explicit byte threshold.
• Magic-byte inspectorShow the first 32 bytes and a common-signature match.
• MIME-type detectorCompare browser-reported MIME type, filename extension, and common leading-byte signatures.
• Sequential file renamerCreate numbered download names while preserving extensions.
• ZIP opener and packerOpen a ZIP, see what is inside, take files out, and pack new archives.