Merge Subtitle Screenshots — Free Online Tool, No Sign-up
Merge subtitle screenshots from movies or videos into one long image. Free, browser-based, no sign-up, no watermark. Supports JPG, PNG, WEBP. Works on iPhone, Android, Mac, Windows.
If you've tried to share a string of movie quotes on Twitter or Instagram, you know the pain: one screenshot per slide, no way to tell the story in one frame. Subtitle Stitch exists because I kept hitting this same wall.
What it does
Drag your subtitle screenshots into the page. The first one shows in full. Every image after that gets cropped to just the subtitle strip. By default, that means the bottom 15% of the frame. Drop in five, ten, sixteen shots, and you get a single tall image ready to post.
The sort is automatic. Files named with a leading number, like 01.jpg or 02.jpg, keep their order. Everything else falls back to capture time. You can still drag them around to fix the order after upload. No need to rename files.
How Subtitle Stitch merges them
- Upload JPG, PNG, or WEBP subtitle screenshots from a movie, video, lecture, or course.
- Let Subtitle Stitch sort the images by filename or capture time so the dialogue stays in order.
- Keep the first screenshot as the full scene for context.
- Crop the following screenshots to the subtitle region, with the default visible area set to the bottom 15%.
- Export the merged result as one long image for sharing, archiving, or notes.
Why people merge subtitle screenshots
A few common cases:
- Long quotes on social. Twitter long posts, Instagram stories, Xiaohongshu updates. All of them swallow a multi-screenshot carousel. One tall image keeps the dialogue readable.
- Archiving movie lines. Bloggers who write about film build personal quote libraries. Stitched images are easier to store and search than a folder of loose JPGs.
- Lecture notes. People taking screenshots from online courses want a single image they can paste into Notion or Obsidian.
- Personal collections. Some users just want a clean way to keep their favourite frames in one place.
Privacy
Nothing uploads. The whole pipeline runs in your browser. Your screenshots stay on your machine until you click export. That matters if you're working with unreleased material, or just don't want your movie habits sitting on someone else's server.
Free vs Pro
The free tier covers most people:
- Free: 5 exports per day, 6 images per stitch, JPG only, standard quality, custom watermark
- Pro: unlimited exports, 16 images per stitch, JPG + PNG + WEBP, high-resolution output, custom watermark and logo
- Free is genuinely free. No card on file, no trial countdown.
A note on quality
The default export at 1x is fine for phone screens and most social posts. If you're printing or working with a 4K display, bump to 2x in the export panel. The file gets bigger, but the text stays sharp.
Frequently asked
Is it really free?
Yes. Five exports a day without an account. No card on file.
Do my images go to a server?
No. Everything processes locally in the browser. Close the tab and the data is gone.
How many screenshots can I merge at once?
Six on the free plan, sixteen on Pro.
Does it work on iPhone?
Yes. The interface is mobile-first and works in Safari and Chrome on iOS.
What format should I export?
JPG for sharing because the files are smaller and look fine on social. PNG if you need transparency or print quality. WEBP is the middle ground for web use.
Try it
Drop your screenshots into Subtitle Stitch and see what comes out. The first stitch takes about a minute once you have your images lined up.