How to Merge Subtitle Screenshots Into One Tall Image
Combine multiple movie or video subtitle screenshots into a single tall image. Free, runs in your browser, no account, no watermark and no upload to a server.
You are watching something and there is one line of dialogue you want to keep. To send in a chat, to post somewhere, or just to have for later. Those moments come up more often than you would think.
Taking the screenshot is the easy part. Everything after that is the annoying bit: cropping each one by hand, then sending them one by one, so the conversation turns into a long scroll that nobody ever reads back.
Subtitle Stitch does that whole part in one go. Drop in the subtitle images and it stacks them vertically into one long image for you. Everything happens inside your own browser, so nothing is uploaded to a server and there is no file size to worry about.
If you collect subtitle screenshots more often than you would like to admit, this is worth a try.
What the tool actually does
Three things, really.
It takes multiple image files (JPG, PNG, WEBP) and stacks them vertically in order. That is the merging part.
It finds the subtitle region and crops it automatically. A movie screenshot is mostly the scene, with the dialogue in a small line at the bottom. Merge them as-is and you get a wide image with black bars.
And it all happens in your browser. The images never leave your device, so there is nothing to upload and nothing to wait for.
Why a browser tool instead of a phone app
If you search for this in Japanese, most of the results are phone apps. They work, but there are a few trade-offs.
You have to install one. That is storage on your phone and a permission prompt, for something you may only use once.
It only works on the phone. If you want to do it on a laptop, you are out of luck.
And a lot of them are paid or ad-supported. Nobody should have to pay to try a tool once.
A browser tool needs none of that. Open one tab, and it works the same on a phone, a tablet and a desktop. No account either.
Preparing the screenshots
Use the screenshot function your operating system already has.
- Mac: Cmd + Shift + 4
- Windows: Win + Shift + S
- iPhone / iPad: side button plus volume up (or down), then swipe
- Android: power plus volume down at the same time
You can crop down to just the subtitle strip or keep the whole frame. Both work.
Order and cropping
The order of the files is the order in the result. On films where subtitles move upward, that can look wrong, so reorder the images in the preview.
Check the preview before exporting. Position and cropping can still be adjusted there.
Exporting
Save the result as PNG, JPG or WEBP, at double resolution if you want it sharper.
No watermark. No daily export limit.
Frequently asked
Is the tool free?
Yes. No account required, no watermark, and there is no daily export limit.
Do I have to upload my images?
No. The processing happens entirely in your browser. Your images are never sent to a server.
How many images can I merge?
Up to 50 images per run.
Does it work on a phone?
Yes. It runs in the browser, so it behaves the same on a phone, a tablet and a desktop. The order is the order you uploaded them in.
Which image formats are supported?
JPG, PNG and WEBP.
Can it pull subtitles straight out of a video?
No. This is a tool for images. Take screenshots of the scenes you want first, then merge them.
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.