File Tools
6 free tools · No sign-up · 100% browser-based
AllCoreKit's file tools work on any kind of file, not just text, images, or PDFs, directly in your browser, with no upload, no servers, and no tracking. Bundle documents, photos, and whole folders into a ZIP or TAR.GZ archive, unpack one back into its files, split a large file into numbered parts and join the parts back together, rename a whole batch of files with find and replace, numbering, and case rules, or calculate a file's MD5 and SHA checksums to verify a download, without handing anything to a third-party site.
File Archiver
Bundle any files or whole folders into a single ZIP, TAR, TAR.GZ, or GZIP archive, built entirely in your browser with nothing uploaded.
e.g. Bundle a signed contract, scanned ID, and payslips into one ZIP for a rental application without uploading them to a converter site
File Extractor
Unpack ZIP, TAR, TAR.GZ, and GZIP archives into their files and folders, then save the folder or download every file, all in your browser.
e.g. Open a ZIP of contracts or scans from a client without uploading it to a third-party converter site
File Checksum Calculator
Calculate the MD5, SHA-1, SHA-256, SHA-384, and SHA-512 checksum of any file or folder and compare it with a published hash, all in your browser.
e.g. Check that a Linux ISO or Windows installer matches the SHA-256 on the vendor's download page before you flash it or run it
File Splitter
Split any large file into numbered parts by chunk size or part count, download them one by one or as a single ZIP, with a manifest for joining them again.
e.g. Send a 200 MB video by email or chat by cutting it into 20 MB parts that fit under the attachment limit
File Joiner
Join numbered .part001, .part002 chunks back into the original file. Parts are sorted by number and checked for gaps, so a missing part is named instead of producing a broken file.
e.g. Rebuild a large video or disk image that a friend sent as numbered .part files to get around an email or chat size limit
Batch File Renamer
Rename many files at once with find and replace (text or regex), prefixes, suffixes, sequential numbering, and case changes, preview every new name, then download them as a ZIP.
e.g. Turn a folder of camera files like IMG_4821.JPG into Trip_001.jpg, Trip_002.jpg in shooting order