Guides5 min read
How to Add a Watermark to a Video (Free)
Burn a text or logo watermark into any MP4, MOV, WebM or MKV right in your browser. Free, no upload, no account, and nothing extra is added.
Watermark video
Put your name or logo on a video. Free and processed in your browser.
Drop a video here, or click to browse
MP4, MOV, WebM, or MKV — up to 2GB
A watermark tool that shows you the result first
See it on your video first
The preview draws the watermark over your actual clip and updates as you change the text, size, opacity or position, so you do not have to export to find out it is too faint.
Text or logo
Type a name or copyright line, or upload a transparent PNG logo. Both share the same size, opacity and position controls.
Nine positions
Any corner, any edge, or the centre. The mark keeps a small margin from the edge so it never gets clipped.
Audio passed through untouched
MP4 and MOV soundtracks are copied across rather than re-encoded, so adding a watermark costs nothing in audio quality. WebM and MKV audio is converted to AAC so the MP4 plays on phones and Safari.
No extra branding
Nothing is added to your video except your own watermark. No PixelTools logo, no end card, no trial limit.
Runs on your machine, not ours
ffmpeg.wasm does the work inside the browser tab. No upload, no server-side copy of your footage, no account to create first.
Watermark a video in three steps
- 1
Add your video
Drop an MP4, MOV, WebM, or MKV file onto the page, up to 2GB. It is read straight off your disk, not sent anywhere.
- 2
Type your text or upload a logo
Write a name or copyright line, or upload a PNG logo. Pick the size, opacity and one of nine positions. A preview on top of your video shows how it will look.
- 3
Add the watermark and save the MP4
One click burns the watermark into every frame in your browser and hands back an MP4 to download. No queue, no account, nothing extra stamped on top.
When a video needs your mark
Original footage you are about to post, a draft going to a client, or a batch of clips that should carry your brand: each one is a single pass away from marked.
Protecting original footage
Put your name or channel on a clip before you post it, so a re-upload elsewhere still points back to you.
Sending a draft to a client
Share a cut for approval with a DRAFT or the client's name across it, without handing over a clean copy before it is paid for.
Branding clips for social
Add your logo to the corner of every short clip so each one carries your brand wherever it gets shared.
Marking course and demo videos
Label tutorials, screen recordings and product demos with your company logo or a confidentiality note.
Frequently asked questions
Can I watermark a video for free without an account?
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Yes. There is nothing to sign up for and no PixelTools logo is added to your video. The only mark on the result is the one you chose.
Can I use a logo instead of text?
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Yes. Switch to Logo and upload a PNG, WebP or SVG. A PNG with a transparent background works best, since the transparent parts stay see-through over the video. You set how wide the logo is as a share of the video's width, so it looks the same on a phone clip and a 4K file.
Where can I put the watermark?
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In any of nine places: the four corners, the middle of each edge, or the centre. A corner is the usual choice because it stays out of the way. The centre is harder to crop out but gets in the way of the picture.
Can the watermark be removed afterwards?
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It is baked into the pixels of every frame, so it cannot be switched off like a subtitle track. A determined person with editing software can still hide a small corner mark, which is why a larger or more central mark protects better.
Does it lose quality?
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The picture has to be re-encoded because every frame changes. PixelTools uses H.264 at CRF 23, a visually lossless setting for nearly all footage, so one pass is not something you will see. The audio is copied across untouched for MP4 and MOV files, and converted to AAC for WebM and MKV so the MP4 plays everywhere.
Does the watermark sit on the whole video, or only part of it?
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The whole video. The same mark is placed on every frame from the first to the last, in the same spot and at the same size.
How long does it take?
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It scales with resolution and length, since every frame is re-encoded on your own machine. A one-minute 1080p clip typically finishes in well under a minute on a modern laptop. The progress bar follows ffmpeg's real position in the file.
Are my videos uploaded to PixelTools?
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No. The watermark is added by ffmpeg.wasm inside your own browser tab, so the file never crosses the network. That also means no upload wait and no copy of your footage on someone else's server.
Watermark your video now
Free, private, no account needed.