Browser video editor · Persian & English
Every word, right on cue.
Upload a short video, get captions timed to every word, style them, cut by editing the transcript, and export an MP4. The heavy work happens on your own device.
Editing and exports are free. No card needed.
Live demo: these captions are drawn by capshak’s real renderer, in your browser, right now. Drag the captions up or down.
- Renders in your browser
- Persian-native: RTL, ZWNJ, mixed text
- 48 Persian fonts
- Monthly or yearly plans, in toman
- AI editor that edits for you
- Persian & English interface
From raw clip to post
Five steps. One tab.
I'm Mohsen, and for um a little more than like ten years I've been
- 01
Drop your video
Pick a file and it opens instantly: decoding, waveform and preview run on your device, nothing waits on an upload.
- 02
Captions on every word
Only a small audio file goes to transcription. Words come back with their own timing, Persian or English, ready to style.
- 03
Cut by deleting words
Select words in the transcript and delete them. The video cuts itself; fillers and long pauses go in one click.
- 04
Make it yours
Twenty-four caption styles, 53 fonts, animations per word, stickers, music, effects and keyframes on a real multi-track timeline.
- 05
Export the MP4
H.264 encoding happens in the browser too. Captions are burned in, frame-accurate, exactly as in the preview.
Privacy by architecture
Your video stays with you.
Most editors upload your whole file before they can do anything. capshak decodes, previews and encodes in the browser. To write captions, it sends only a compressed audio track, about 240 KB a minute. Backup to our servers is your choice, so you can open a project on another device.
- Decode & preview
- Waveform & timeline
- Effects & grading
- H.264 export
- Transcription
- Translation & proofreading
- Optional backup
Inside the editor
A real editor, not a caption toy.
AI editor
Ask in plain words. It cuts, styles, adds b-roll and music, and every change is one undo away.
Persian done right
Shaping, ZWNJ and mixed Persian/English lines render correctly, word by word.
Translate captions
Persian, English, Arabic and more. Timing stays on the beat.
Effects & transitions
27 effects, 9 transitions and color grading, drawn on the GPU.
Keyframes
Move, scale, rotate and fade anything over time.
Stickers & sound
Animated stickers, sound effects and music, including Persian-lettered ones.
Reframe in a click
9:16, 1:1, 4:5 or 16:9. Zoom, pan and blurred backgrounds.
Multi-track timeline
Everything on one timeline.
Captions, text, effects, overlays, music and voice on their own tracks. Split, trim, snap to the beat and drag with your finger on a phone.
- Text
- Effects
- Captions
- Overlay
- Video
- Music
Made for
Whoever you post for.
Reels that work with the sound off
Most viewers start with the sound off. Punchy word-by-word captions keep them watching to the end.
Learn more- 1Frame it vertical (9:16)
- 2Caption it and pick a punchy style
- 3Remove pauses and fillers in one click
- 4Add stickers and music, then export
Short clips from long conversations
Find and cut the best moments by editing the transcript, caption each speaker clearly and reframe for social.
Learn more- 1Bring the segment (up to an hour on the Gold plan)
- 2Delete the extra sentences in the transcript
- 3Put two speakers side by side with split screen
- 4Pick a clean, readable caption style
Short lessons everyone can follow
Accurate captions for deaf and hard-of-hearing viewers and noisy places; translations for students in other languages.
Learn more- 1Bring the lesson video
- 2Caption it and give proofreading your technical terms
- 3Add text and arrows for key points
- 4Translate to English or Arabic
Product videos that sell
Make product intros, unboxings and offers with on-brand captions, “sale” stickers and music cut to the beat.
Learn more- 1Bring the product video
- 2Apply your brand font and colors to captions
- 3Add stickers and price text
- 4Export for Reels and Stories
Dozens of videos a week, calmly
With the AI editor, style copy-paste and plans with clear monthly limits, short-form production for several clients becomes predictable.
Learn more- 1Build a style per client
- 2Paste it onto the next videos
- 3Hand repetitive edits to the AI editor
- 4Go Gold: unlimited transcription and videos up to an hour
Fast, accurate short news
Caption reports and interviews quickly, get names right with proofreading, and publish an English version too.
Learn more- 1Bring the footage
- 2Caption and proofread with names as hints
- 3Add a lower third for the speaker
- 4Translate and export
How we build
Plain promises we keep.
Persian from day one
Right-to-left, half-spaces and mixed Persian/English text render correctly, with real Persian fonts at hand.
Private by architecture
Your video is opened, edited and rendered in your browser. Only compressed audio reaches us, to make captions.
Clear pricing
Three plans with toman prices and clear limits, monthly or yearly. Editing, styling and exporting are always free.
Built in the open
Everything we add or fix goes on the changelog: 17 updates so far.
Pricing
One plan, every AI tool.
Captions, AI proofreading, translation and the AI editor, within your plan’s limits. Editing and exports are always free. Pay yearly and save 25%.
Runs for 30 days
- Videos up to 10 minutes long
- 10 minutes of transcription a month
- 30 AI editor requests a month
- AI proofreading and translation
Runs for 30 days
- Videos up to 5 minutes long
- Unlimited transcription
- 150 AI editor requests a month
- AI proofreading and translation
Runs for 30 days
- Videos up to 60 minutes long
- Unlimited transcription
- 600 AI editor requests a month
- AI proofreading and translation
Plans are sold on mindio.ir. Pay with the mobile number you use to sign in to capshak.
Compared
How capshak stacks up.
Public facts only, checked on October 18, 2026.
Questions
Good to know.
Is my video uploaded to your servers?
Not for editing or exporting. The video is opened, previewed and encoded in your browser. To make captions, only a compressed audio track is sent. You can choose to back the video up so the project opens on another device; backups are deleted automatically after a set number of days.
How does pricing work?
There are three plans, Bronze, Silver and Gold, paid monthly or yearly (yearly is 25% cheaper). Each covers captions, AI proofreading, translation and the AI editor within its limits: the longest video per project, transcription minutes a month (only Bronze has a cap) and AI editor requests a month. Editing, styling and exporting are free, even without a plan.
How accurate are Persian captions?
Very accurate for clear speech. The speech model is chosen for Persian, and AI proofreading fixes misheard names and words, ZWNJ and punctuation. You can also edit any word by hand.
How long can my video be?
It depends on your plan: a project can be up to 5 minutes on Silver, 10 on Bronze and an hour on Gold. capshak is built for short-form.
Do exports have a watermark?
No. MP4 exports are always free and never watermarked.
Does it work on a phone?
Yes. The editor is built for touch: drag the timeline with a finger, pinch to zoom, and tools open in place of the timeline. It runs in current Chrome, Safari and Edge.
Your next video, captioned in minutes.
Edit and export for free, and pick a plan when you want AI captions. Nothing to install.
- Monthly or yearly plans, in toman
- Your video stays on your device
- Persian and English