Bulk rename files online.
Right in your browser.
Rename.Tools
Bulk rename files online. Right in your browser.
7 Rule Types•Live Preview•Zero Uploads
Rename local files directly with regex, sequences and live preview. No uploads or ZIP files to download again.
Direct renaming in supported desktop Chrome and Edge browsers. Other browsers can export rename scripts.
Open Sourceon GitHub
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Free forever • No sign-up • Works offline
See the result. Try it with sample names.
Choose a task, review its rules and preview the changes. No files or sign-up needed.
Photos with a fixed date and sequence
BeforeIMG\_0421.jpgAfter2026-05-22\_001\_tokyo.jpg
BeforeIMG\_0422.jpgAfter2026-05-22\_002\_tokyo.jpg
Uses the literal date 2026-05-22, not EXIF metadata. Change the date and location before using your own photos.
Review the rules, then preview sample filenames without changing real files.
Add a project prefix and version suffix
Beforeproposal.pdfAfterclient-a\_proposal\_review.pdf
Beforebudget.xlsxAfterclient-a\_budget\_review.xlsx
Adds client-a\_ at the start and \_review before the extension. Existing names and extensions stay intact.
Review the rules, then preview sample filenames without changing real files.
Replace spaces with underscores
BeforeQuarterly Report 2026.pdfAfterQuarterly\_Report\_2026.pdf
Beforedraft final.txtAfterdraft\_\_final.txt
Replaces every ordinary space with an underscore. Two consecutive spaces become two underscores; other punctuation and extensions are unchanged.
Review the rules, then preview sample filenames without changing real files.
Why Rename.Tools
Everything you need, nothing you don't
A focused set of capabilities designed to make bulk renaming fast, safe, and predictable.
Rule Chains
Combine 7 rule types — find & replace, regex, sequences, case conversion, insert, remove, and custom JS — in any order
Live Preview
Every change updates instantly as you type. See original names, new names, and conflicts in real time
Conflict Detection
Automatically spots duplicate filenames before you rename, preventing accidental overwrites
100% Local & Private
File renaming and metadata extraction run locally in your browser without uploading your files. Optional TMDb lookups send search terms to TMDb. Website visit statistics are separate from file processing.
Undo & Script Export
Built-in undo/redo support, plus export as Bash or PowerShell scripts for offline execution or rollback
Free & Open Source
No sign-up, no trials, no paywalls. Fully transparent code on GitHub, community-driven
Use Cases
Perfect for any workflow
Whether you're organizing photos, managing media libraries, or cleaning up project files — Rename.Tools adapts to your needs.
Photo LibrariesVideo CollectionsMusic FilesCode ProjectsDocument Archives
Organize thousands of photos in seconds
Rename vacation photos with dates, add location prefixes, or create consistent naming from camera files like DSC\_0001.jpg to meaningful names.
Rule Chain
1Sequence2024-03-15\_{n} · 001, 002, 003…
Preview
OriginalNew Name
IMG\_0421.jpg2024-03-15\_001.jpg
IMG\_0422.jpg2024-03-15\_002.jpg
IMG\_0423.jpg2024-03-15\_003.jpg
IMG\_0424.jpg2024-03-15\_004.jpg
Photo date and numbering guide
Manage video files with ease
Clean up downloaded video names, add episode numbers to series, or standardize your media library naming conventions.
Rule Chain
1Regex(.+)\\.s(\\d+)e(\\d+).\* → $1 S$2E$3
2Find & Replace"." → " "
3Case/StyleTitle Case
Preview
OriginalNew Name
breaking.bad.s01e01.720p.mkvBreaking Bad S01E01.mkv
breaking.bad.s01e02.720p.mkvBreaking Bad S01E02.mkv
breaking.bad.s01e03.720p.mkvBreaking Bad S01E03.mkv
breaking.bad.s01e04.720p.mkvBreaking Bad S01E04.mkv
Organize your music library
Format track names, add artist prefixes, clean up downloaded filenames, or prepare files for media servers.
Rule Chain
1Case/StyleTitle Case
2Insert"{media.artist} - " at start
3Sequence{n}. {name} · 01, 02, 03…
Preview
OriginalNew Name
love story.mp301. Taylor Swift - Love Story.mp3
shake it off.mp302. Taylor Swift - Shake It Off.mp3
blank space.mp303. Taylor Swift - Blank Space.mp3
bad blood.mp304. Taylor Swift - Bad Blood.mp3
Refactor file structures
Bulk rename components, convert naming conventions (camelCase to kebab-case), or prepare assets for deployment.
Rule Chain
1Case/Stylekebab-case
Preview
OriginalNew Name
MyComponent.tsxmy-component.tsx
UserProfile.tsxuser-profile.tsx
NavBar.tsxnav-bar.tsx
DataTable.tsxdata-table.tsx
Tame your document chaos
Add date prefixes, remove version suffixes, standardize naming across departments, or prepare files for archival.
Rule Chain
1Regex\\s\\[\\(\\\[\].\?\[\\)\\\]\] → ∅
2Case/Stylekebab-case
3Insert"2024-03-15\_"
Preview
OriginalNew Name
report (final v3).pdf2024-03-15\_report.pdf
budget \[2024\].xlsx2024-03-15\_budget.xlsx
meeting notes (draft).docx2024-03-15\_meeting-notes.docx
project plan (v2).pptx2024-03-15\_project-plan.pptx
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Stop renaming files one by one.
Rename.Tools gives you the power to rename thousands of files with precision and confidence. No sign-up, no downloads, no uploads.
Free forever • No sign-up • Works offline
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Frequently asked questions
Everything you need to know about Rename.Tools and how it helps you manage file names at scale.
Is Rename.Tools really free?
Yes, completely free and open source. There are no premium tiers, no trials, and no hidden fees. The full source code is available on GitHub under the AGPL-3.0 license.
Do my files get uploaded to a server?
File renaming and metadata extraction run locally in your browser without uploading your files. Optional TMDb lookups send search terms to TMDb. Website visit statistics are separate from file processing.
Why is it safe to use?
You choose which files the browser can access. Preview the proposed names and resolve conflicts before executing; use Undo if needed. File processing stays local. Website analytics are described separately in our privacy policy.
What browsers are supported?
Rename.Tools works best in Chromium-based browsers (Chrome, Edge, Brave, Arc) which support the File System Access API for direct renaming. In other browsers, you can use sample test mode or export rename scripts.
How many files can it handle?
Rename.Tools can handle thousands of files in a single batch. The live preview updates in real time even with large file sets. Performance depends on your browser and device capabilities.