Local File Tools
Inspect, verify and transform selected files directly in your browser without uploading their contents or using downloader workers.
Local File Information Viewer
Inspect a file's name, size, declared MIME type and modification time entirely in your browser without uploading the selected file.
Open tool →File Type and Magic Byte Detector
Compare a file's extension and MIME declaration with common binary signatures entirely in your browser without uploading the selected file.
Open tool →SHA-1 File Hash Calculator
Calculate a reproducible SHA-1 digest for local integrity checks entirely in your browser without uploading the selected file.
Open tool →SHA-256 File Hash Calculator
Calculate a reproducible SHA-256 digest for local integrity checks entirely in your browser without uploading the selected file.
Open tool →SHA-384 File Hash Calculator
Calculate a reproducible SHA-384 digest for local integrity checks entirely in your browser without uploading the selected file.
Open tool →SHA-512 File Hash Calculator
Calculate a reproducible SHA-512 digest for local integrity checks entirely in your browser without uploading the selected file.
Open tool →Local File Checksum Verifier
Compare a locally calculated digest with an expected checksum entirely in your browser without uploading the selected file.
Open tool →Gzip File Compressor
Compress one file into a standards-based gzip stream entirely in your browser without uploading the selected file.
Open tool →Gzip File Decompressor
Decompress a gzip stream into its original local bytes entirely in your browser without uploading the selected file.
Open tool →Local Image Resizer
Resize a PNG, JPEG, WebP or BMP image to exact pixel dimensions entirely in your browser without uploading the selected file.
Open tool →Local Image Compressor
Re-encode an image with a visible quality setting and measured result size entirely in your browser without uploading the selected file.
Open tool →PNG JPEG and WebP Image Converter
Convert a browser-decodable image to PNG, JPEG or WebP entirely in your browser without uploading the selected file.
Open tool →Image Metadata Remover
Create a clean pixel-only copy that excludes EXIF and location metadata entirely in your browser without uploading the selected file.
Open tool →Dominant Color from Image
Estimate the most frequent visible color from a bounded pixel sample entirely in your browser without uploading the selected file.
Open tool →SRT to WebVTT Subtitle Converter
Convert SubRip timing syntax and headings into a WebVTT text file entirely in your browser without uploading the selected file.
Open tool →WebVTT to SRT Subtitle Converter
Convert WebVTT cue timings into a numbered SubRip subtitle file entirely in your browser without uploading the selected file.
Open tool →Subtitle Time Shift Tool
Move every valid SRT or WebVTT cue forward or backward by a fixed offset entirely in your browser without uploading the selected file.
Open tool →Subtitle Whitespace Cleaner
Normalize line endings and excess blank subtitle lines without changing cue text entirely in your browser without uploading the selected file.
Open tool →Local Text File Statistics
Count bytes, characters, words, lines and non-empty paragraphs in a text file entirely in your browser without uploading the selected file.
Open tool →Local Duplicate File Finder
Group byte-identical selected files by local SHA-256 digest entirely in your browser without uploading the selected file.
Open tool →CRC32 File Checksum Calculator
Calculate a standard CRC32 checksum for compatibility and archive checks entirely in your browser without uploading the selected file.
Open tool →Deflate File Compressor
Compress one file into a browser-native zlib-wrapped deflate stream entirely in your browser without uploading the selected file.
Open tool →Deflate File Decompressor
Restore bytes from a zlib-wrapped deflate stream entirely in your browser without uploading the selected file.
Open tool →Local Image Cropper
Crop an exact rectangle from a browser-decodable image entirely in your browser without uploading the selected file.
Open tool →No matching tools on this page.