Free local-first file utility
Batch rename files online with live preview: add prefixes and suffixes, replace text, apply sequential numbers, then download a renamed ZIP. WebRenamer is a free web renamer that works 100% locally in your browser — no uploads, no installs, no signup. Whether you call it a file renamer, a batch rename tool, or a web renamer, the job is the same: turn messy filenames into clean, consistent names in seconds.
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About the tool
A free online file renamer is a browser-based tool that renames many files in one pass. Instead of editing each filename by hand, you describe the change once — replace this text, add a sequence number, normalize the case — and the file renamer applies that rule to every file you dropped in.
WebRenamer is a local-first take on the online file renamer. The renaming runs entirely inside your browser: your files never leave your device, nothing is uploaded, and the renamed copies are packed into a ZIP on your machine. You get the zero-install convenience of a web tool with the privacy of a desktop app.
Core Features
WebRenamer keeps every rename on your device while covering the practical rules people expect from a serious file renamer: numbering, replacement, case cleanup, pattern matching, and extension handling for everyday file organization.
See original names and new names side by side, catch duplicates early, and only export when the whole list is clean. Every rule you edit updates the preview instantly, so there are no surprises after the download.
Combine find and replace, prefix, suffix, numbering, case conversion, regex, trim, and extension rules in one workflow. Rules apply in order, and you can drag the steps to rearrange the sequence.
Start from presets for common tasks, then refine with custom operations instead of rebuilding the same workflow every time. Numbering, filename cleanup, and lowercase presets cover the most frequent jobs in one click.
Files stay in the browser during rename preview and ZIP generation, which keeps the tool fast and easy to trust. This online file renamer never uploads your documents, so confidential filenames stay confidential.
Best For
Comparison
Desktop tools such as Bulk Rename Utility or Advanced Renamer are powerful, but they ask for an installer, admin rights, and a learning curve before you rename a single file. A web renamer removes that friction: open the page, drop your files, build a rule, done.
For one-off cleanups, shared computers, and locked-down work laptops, a browser-based file renamer is simply the faster option. And because WebRenamer processes everything locally, you do not trade privacy for convenience — confidential documents stay on your machine the whole time.
Use Cases
Turn inconsistent camera filenames into clean numbered sets for client delivery, archives, or gallery uploads. A shoot renamed from DSC_8841.jpg to Anna-Ben-Wedding-041.jpg is easier to deliver, easier to sort, and easier to find later.
Normalize invoices, reports, statements, and exported records with predictable prefixes, dates, and formatting. Consistent document names make shared drives searchable for the whole team, not just the person who saved them.
Fix spaces, mixed casing, duplicate words, and version noise before files move into production or handoff. Replace spaces with underscores, force lowercase, and strip draft markers in a single pass.
How To Use
Three steps from messy filenames to a clean, downloadable batch. No account, no upload queue — the file renamer starts working the moment your files land in the list.
Drag files into the drop zone or browse from your device. The file renamer accepts mixed file types and keeps everything in the current browser session. Add dozens or hundreds of files at once — the list handles large batches without slowing down.
Apply presets or add rules manually for numbering, replace, case cleanup, prefixes, suffixes, regex, or extension handling. Each rule appears as a step you can edit, reorder, or remove, and every step shows exactly what it will change.
Check the before-and-after list, resolve duplicate or invalid filename warnings, then export the renamed package as a ZIP. Your original files stay untouched on the device — only the renamed copies are downloaded.
FAQ
Short answers help you decide quickly — from privacy and pricing to platforms and supported rules.
Yes. This file renamer is designed for local-first use in the browser, so the rename preview and ZIP export happen entirely client-side. Your files are never sent to a server, which also keeps the tool fast on large batches.
You can use find and replace, prefixes, suffixes, numbering, case changes, trim and cleanup rules, regex, date formatting, and extension changes. Rules stack in any order, and each step can be edited, reordered, or removed at any time.
Yes. The file list shows the original and renamed values live, which helps prevent duplicate names or formatting mistakes before export. Invalid characters and naming conflicts are flagged automatically as you build rules.
It works well for photographers, content teams, operations teams, agencies, and anyone managing large groups of files with inconsistent naming. If you rename files more than once a week, a rule-based file renamer saves real time.
Yes. WebRenamer is free to use with no account, no file-count limits, and no download caps. Rename as many files as you like, as often as you like — the full rule set is available to everyone.
Yes. Because the file renamer runs in the browser, it works on macOS, Windows, Linux, and ChromeOS with nothing to install. On mobile, you can rename files from a phone or tablet in exactly the same way.
Drop a folder's worth of files into the free file renamer above, pick a preset or build your own rule, and download clean, consistent filenames as a ZIP. No signup, no upload queue, no software to install — just a fast online file renamer that respects your privacy.
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