CueforgeSUBTITLE WORKBENCH Browser-local

LESS FRICTION. BETTER CAPTIONS.

Edit SRT & VTT.
Fix subtitle timing.

Fix the offset. Untangle overlaps. Give your words room to breathe. A focused subtitle workbench, right in your browser.

SRT + WebVTT · No signup · No file uploads

YOUR EDITING DESK

A little care goes a long way.

In-memory session
Example captions are loaded in memory. Open your own file to begin.
CUES0
NEED A LOOK0
EXPORT BLOCKERS0
LAST CUE ENDS00:00:00.000

See it in the moment

No video loaded
▷Your video stays yours.

Preview a local clip without uploading it.

Browser-supported codecs only. Video is read through a local object URL, never loaded into this app’s JS memory. Caption overlay is in-page only, not fullscreen or picture-in-picture. Test reel: original, silent, 640 × 360 MP4.

00:00:00.000

Caption cues

Select a cue to edit or seek. Exports are chronological with sequential SRT numbering. Multiple active captions are stacked in the preview.

A SMALLER, CALMER WORKFLOW

From almost right
to right on cue.

01

Bring your captions

Open or paste existing SRT and VTT. Add a local video if you want to check the timing by eye.

02

Find the friction

Review overlaps, fast lines and timing errors. Shift every cue or correct a gradual drift.

03

Keep the good version

Review changes, undo freely, and export clean captions. Keep a JSON backup to return later.

FILES STAY WITH YOU

Private by design.
Practical by choice.

No cloud file uploads, no account and no external fonts or scripts. Caption processing happens in your browser. The hosting service still receives ordinary page/asset requests.

Projects live in memory by default and disappear when the tab closes. Saving on this device is optional, unencrypted, and visible to anyone using this browser profile. Never rely on browser storage as your only copy.

Your session, your choice

Saves captions and settings in localStorage. Does not save video files. Enabling this replaces any saved project here.

Automatic saving is off.

A focused tool, with clear limits.

Cueforge edits existing subtitles. It does not transcribe, translate, encode video or burn in captions. SRT/VTT export is free here; free subtitle tools also exist elsewhere. This is not a full video editor or a replacement for every paid editing feature.

Modern browsers with JavaScript, File/Blob APIs and native video playback are required. Codec support varies by browser and device. Downloads may open a share/save sheet on mobile. UTF-8 only; one project at a time; 2 MiB text, 4 MiB backups, 5,000 cues, local video preview up to 2 GiB. The mini timeline displays the first 500 cues. Undo retains up to 30 changes within an 8 MiB budget per undo/redo stack.

KEEP GOOD TOOLS OPEN

Useful to you?
Pay it forward.

All features are free. Optional donations help support the work. No wallet connection. Copy an address and double-check the asset and network in your own wallet.

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REVIEW BEFORE APPLYING

Preview changes