batch renamer · local only
Rename files in your browser — no upload, same bytes
Queue mixes of images and anything else your OS hands to the picker. Choose prefix ladders, numbering, optional find-and-replace, and slug-safe filenames; download one ZIP or save rows individually.convrt never stores the bytes—everything happens in-session like the compressor lane (but without re-encoding).
tab notes
encode step → skipped
bytes outbound → downloads only
bytes on servers → none
Drop files to rename
Adjust rules in the card below, then download individually or as a ZIP. Nothing uploads — names are computed in your browser.
Refreshing wipes the queue for privacy—that matches other convrt workbenches. Need conversions or compression afterward? Finish renaming here, drop the ZIP or files into /convert//compress as needed.
renamer · privacy
Your filenames change — your payloads never leave the desk
convrt ships static assets; the renaming math runs wherever DevTools thinks your tab lives. Closing the workflow clears blobs from memory unless you pinned them yourself—ideal for inventories, screenshots, or client drops that should not ride a random SaaS renaming API.
renamer · slugs
Flip on URL-safe mode when catalogs reject weird characters
Hosting providers and storefronts routinely reject spaces, slashes, punctuation, unicode noise, or double extensions in asset URLs. Toggle slug mode to collapse anything outside letters, digits, underscores, or hyphens so exports land in CMS fields without frantic manual QA.
renamer · ladders
Prefix + increment is spreadsheet brain without the spreadsheet
Need sixty photos to read product_sku_12_001 … product_sku_12_060? Set the prefix, choose underscore or hyphen, dial digit width, and let the queue walk the sequence in order. Original extensions stay attached so downstream tools still sniff MIME types correctly.
renamer · cleanup
Find & replace before you hit upload
Camera dumps love strings like IMG_ or vendor codes. Strip or swap them on the stem after numbering rules run—handy when marketing wants consistent slugs but you still need the counter for traceability.
renamer · export
ZIP handoffs that respect your new names
Batch rename for email? One click builds a ZIP where every member already reflects the preview string. If two rows collide, convrt quietly appends _2, _3—no mystery parentheses, which keeps automation-friendly paths elsewhere in your stack.
renamer · queue
Order is the contract — drag yourself honest
Numbers always follow the queue order you see on screen. Add late files? They pick up the next indices automatically. Remove a row? Recompute before exporting so finance, SEO, or creative get the sequence they expected.
renamer · lanes
Converters transcode; compress squeezes; renamer only edits strings
renamer · safety
Duplicate previews warn before you ship a sloppy ZIP
When two previews collide we flag the row amber and spell out how ZIP exporting will disambiguate. Single-file downloads still use exactly the preview name—so fix the pattern if you rely on deterministic names outside archives.
renamer · etiquette
No accounts, no rename history hoarded in the cloud
There is nowhere to log in because there is no rename vault behind the curtain. That means you shoulder your own archiving—perfect for GDPR-friendly workflows and for teams who already mistrust mysterious “optimization” backends.
renamer · workloads
Built for storefronts that judge you by filenames
Whether you are normalizing vehicle photo drops, marketplace SKUs, or screenshot proof bundles, the same tab handles mixed extensions without forcing a separate Windows utility. Pair it with convrt’s other local tools when you finally need compression or conversion after the names look civilized.