Free online video editor
Drop in your videos and photos, put them in order, trim what you don't need, add transitions, text and a soundtrack, then download your movie as an MP4. No sign-up, no watermark, and your files never leave your device.
- Free, no sign-up
- No watermark
- 16:9, 9:16, 1:1, 4:5
- Files stay on your device
100% private — Everything is processed directly in your browser: your files, voice, and image are never sent to Chatzam's servers.
How to edit a video online
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Add your videos and photos
Drop your files in or click Select: each video, photo or title becomes a clip on the timeline at the bottom. The format (landscape, vertical or square) is set automatically from the first file, and you can change it at any time.
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Edit: order, trims, text, music
Drag the thumbnails to reorder them, tap one to trim its start and end, change its speed or write text on it. Move the playhead and press the scissors to split a clip in two. Add a soundtrack and pick a transition: the preview shows the result live.
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Export to MP4
Click Export video: the movie is rendered in your browser, then you can watch it and download it as an MP4, ready for YouTube, TikTok, Instagram or WhatsApp. Your project stays saved on your device in case you want to come back to it.
A real video editor, simple, right in your browser
Multi-clip timeline
Videos, photos and title cards in sequence, reordered by dragging (mouse or finger) or with arrows. Each clip can be trimmed, split, duplicated, rotated 90°, set to fill or fit the frame, and sped up or slowed down from ×0.25 to ×4.
Transitions, text and titles
Fade to black, crossfade, wipe, slide or circle between clips, with adjustable duration, plus a fade-in at the start and a fade-out at the end. One text overlay per clip (position, size, color, shadow or background) and colored title cards for your intro or ending.
Background music and volume
One MP3, M4A, WAV, OGG or FLAC track under the whole movie, looped if it's too short, with its own volume, start point and fades. Each video's sound can be set from 0 to 200%, or muted in one tap.
The right format for every platform, no watermark
16:9 for YouTube, 9:16 for TikTok, Reels and Shorts, 1:1 square, 4:5 for Instagram, in 720p or 1080p, with a blurred, black or white background around images that don't fill the frame. MP4 export (H.264 and AAC) that plays everywhere, with no logo added.
An online video editor with nothing to install
This video editor runs right in your browser, on a computer (Windows, Mac, Linux, Chromebook) as well as on phones and tablets. There's no software to download, no account to create and no subscription: open the page and start editing. The video is rendered on your device using FFmpeg, the free video engine behind most editing software, compiled to run in the browser. The direct benefit: your videos are never uploaded to a server, there's no upload wait, no sign-up wall and no watermark. The engine, about 30 MB, is downloaded once on your first export and then cached. Your project is saved automatically on your device: if you close the tab, it's still there when you come back, files included.
How to edit a video step by step
Start by dropping in all your clips and photos at once: they line up on the timeline in the order you added them. Do a first pass by dragging the thumbnails, or use the arrows in the Clip tab. For each video, set the start and end with the two sliders, or play the preview and press "Start here" or "End here" at the right moment. To cut out a section in the middle, put the playhead on it and press the scissors: the clip is split in two, and you just shorten one of the halves. Then add a title card at the beginning, text over the key moments and a soundtrack, and pick a transition in the Project tab. The Undo button steps back one change at a time. When you're happy with the preview, export: rendering time depends on the length of the movie and the power of your device, and one minute of 720p video usually takes one to a few minutes.
Edit videos for TikTok, Instagram Reels, YouTube Shorts or YouTube
Choose the format before polishing the details, because it changes the framing: 9:16 vertical for TikTok, Reels, Shorts and WhatsApp Status, 16:9 landscape for YouTube and TV, 1:1 square or 4:5 for the Instagram and Facebook feed. A video shot the other way round isn't stretched: with "Fit", it's shown in full and the rest of the frame is filled with a blurred background (the same video enlarged and blurred), black or white; with "Fill", it's enlarged to cover the whole frame and its edges are cropped. 1080p gives a sharper picture for YouTube, while 720p is enough for social media and exports twice as fast. The final file is an H.264 and AAC MP4 at 30 frames per second, the format recommended by all these platforms.
Supported formats and limits
Videos: MP4, MOV (iPhone), WebM, MKV, AVI, 3GP, MPEG, WMV, FLV and TS. When the browser can't play a format (often AVI, WMV or some MKV files), the video is still added: the preview shows a still frame, and the export, done by FFmpeg, includes it properly. Photos: JPG, PNG, WebP, AVIF, BMP, GIF (first frame) and iPhone HEIC. Music: MP3, M4A, AAC, WAV, OGG, Opus and FLAC. A project can hold up to 60 clips and 20 minutes of footage; beyond 4 minutes, exporting in a browser gets slow, especially on a phone, so keep the screen on and the tab open while it renders. For a single task, Chatzam has more direct tools: trim a video, merge videos, add music to a video, make a photo slideshow or add automatic subtitles.
Frequently Asked Questions
Is this online video editor really free with no watermark?
Yes. There's no sign-up, no subscription and no paid version, and no logo is added to your video. Rendering happens on your device, so it costs the site nothing.
Are my videos uploaded to a server?
No. Your files are read and put together in your browser, and the project is saved in your browser's storage on your device (IndexedDB). Nothing is uploaded. The "New project" button deletes this saved copy.
How do I cut out a section in the middle of a video?
Put the playhead at the start of the part you want to remove and press the scissors: the video is split in two. Select the second half and move its start to the end of that part. To just shorten the beginning or the end, use the Start and End sliders in the Clip tab.
How do I add text or a title to my video?
Select a clip and type in the Text field: it's shown for the whole length of that clip, at the top, middle or bottom, in the size and color you choose. For a standalone title card on a colored background, press Title on the timeline.
How do I put music over the whole video?
Press Music and choose an audio file. It plays under the whole movie, looped if it's shorter, cut if it's longer. Set its volume, start point and fades in the Music tab; "Mute / unmute video sound" keeps only the music.
Why is exporting slow, and can I pick it up later?
The video is rendered by your device, not by a server: allow one to a few minutes per minute of 720p footage. Keep the tab open and the screen on. If rendering is interrupted, your project is still there: start the export again, or choose 720p to make it faster.