Make Video from Photos Online — Turn Pictures into a Slideshow
A folder of holiday photos, a stack of product shots, a set of screenshots from a big day — turn them into a video without opening an editor. Drop your JPG, PNG or WebP images, choose how long each one stays, add a crossfade or a slow Ken Burns zoom, and FFmpeg builds an MP4 right on your device. No upload, no watermark, no software to install.
How it works
Make a video from your photos online
You have a handful of photos and you want them as a single video: a recap to post, a quick thank-you, a product walkthrough, a memory to keep. You do not want to install a timeline editor or push private pictures to a website that keeps a copy. This tool lets you make a video from photos with nothing but the browser. Drop your .jpg, .png or .webp files, set how long each one shows, optionally blend them with a crossfade or drift across them with a Ken Burns zoom, and FFmpeg — the same engine desktop software uses, running as WebAssembly on your own machine — stitches them into an H.264 MP4. It is the fastest way to turn pictures into a video without touching a timeline or sending a single file anywhere.
Why turn photos into a video
Share a trip or an event as one watchable clip
A slideshow compresses thirty photos into a thirty-second story that plays on its own. Friends and followers watch it without swiping; you post one file instead of a gallery. A short crossfade between shots keeps it feeling like a film rather than a deck of cards.
Post to vertical social formats
Stories, Reels and Shorts expect a tall 9:16 frame. Pick the "Vertical" preset and your landscape photos are padded (not stretched) into a 720x1280 video that fills the screen on a phone. The same set can be re-rendered square for a feed post.
Showcase a product or a property
A real-estate tour, a marketplace listing, or a portfolio piece reads better as a moving montage than as scattered stills. A slow Ken Burns zoom on each image draws the eye and makes a static shot feel considered.
Make an announcement or a tribute
Birthdays, anniversaries, memorials and year-in-review videos are almost always photo montages. Building one in the browser means you can iterate quickly — change the order, tweak the timing, re-render — without launching heavy software.
Crossfade vs hard cut
These are the two ways one photo hands off to the next, and the choice changes the whole feel of the slideshow. A hard cut swaps the picture instantly at the boundary — clean, fast, and the closest thing to flipping through prints. A crossfade overlaps the outgoing and incoming photos for a short blend (half a second or a full second), so one image dissolves into the next. Crossfades look more cinematic and are the default here, but they add a little render time because the frames have to be blended. If you are processing many photos and want speed, switch to a hard cut. Both keep every photo on screen for its full chosen duration before the transition begins.
The Ken Burns effect, explained
Named after the documentary filmmaker, the Ken Burns effect is a slow zoom or pan across a still photograph so it does not feel frozen. This tool applies a gentle zoom-in to each photo using FFmpeg's zoompan filter: the picture gradually enlarges a few percent over its on-screen time, which reads as a living camera move. Because it re-renders every frame rather than just placing an image, Ken Burns takes longer than a plain crossfade and uses more memory, so it is best on a modest number of photos (a few dozen rather than a few hundred). Leave it off for a quick, lightweight montage; turn it on when you want that polished, documentary feel.
Choosing resolution and frame rate
Resolution sets the size of every frame; all photos are scaled down or padded to fit it, so the output is always uniform even if your sources are different sizes. 1280x720 (HD) is the safe default for web and email. 1920x1080 (Full HD) is sharper but heavier. Square 1080x1080 suits Instagram feeds, and vertical 720x1280 suits Stories and Reels. "Match the first photo" keeps the slideshow at the native size of your lead image, which is handy when every photo already shares a resolution. Frame rate only matters for smoothness during transitions; 30 fps is a good default, while 24 fps gives a slightly more filmic cadence. Whatever you pick, the output is an H.264 MP4 with the yuv420p pixel format that plays in every browser, phone and TV.
Browser slideshow maker vs desktop software
A browser tool and a desktop app solve the same problem under different constraints. The table below shows where each one wins.
| Aspect | This online photo-to-video tool | Desktop (Total Video Converter / Player Pro) |
|---|---|---|
| Install required | No — runs in the browser | Yes — Mac app |
| Privacy | Local only, no upload | Local only |
| Add a music track | Silent MP4 (by design) | Mux audio, any format |
| Speed on large sets | One core, in-browser | Hardware-accelerated, faster |
| Hundreds of photos | Works, but watch memory | Handles big batches |
| Transitions & zoom | Crossfade + Ken Burns | Full filter graphs |
| Output formats | H.264 MP4 only | MP4, MOV, MKV, AVI, more |
| Best for | One-off quick montage | Regular, heavy work |
What the tool does with your photos
Each photo is read into memory and turned into a short video clip of the duration you set. Those clips are then chained together — by concatenation for hard cuts, or by overlapping crossfades for the blend — into one continuous MP4. Photos that do not match the output aspect ratio are scaled to fit and padded with your chosen letterbox color (black by default) so nothing is stretched or cropped. The result keeps the photos in the exact order you arranged, and the output filename adds a -slideshow suffix to the first photo's name so you can tell it apart from the originals. Your original files are never modified; the tool only builds a new download in memory.
Privacy: your photos never leave your device
Every step happens inside your browser tab. When you open files, the browser reads them into memory; the FFmpeg engine, loaded as WebAssembly, stitches the slideshow on your CPU; and the result is handed back as a download link that points to data still on your machine. No request carrying your photos ever reaches our servers, and there is nothing for us to store or delete. The only network traffic is the page itself plus a one-time download of the FFmpeg engine (about 30 MB) the first time you build a video; after that it is cached by your browser. You can even disconnect from the internet after the page loads and the tool still works.
Frequently asked questions
Is this photo-to-video tool really free and does it upload my photos?
Yes, it is completely free with no watermarks, account or per-file limit. All processing runs locally with FFmpeg WebAssembly, so your photos are never uploaded to any server.
What image formats can I use to make the slideshow?
JPG/JPEG, PNG, WebP, GIF (first frame), BMP and TIFF. You can mix formats in one slideshow; each photo is scaled or padded to the resolution you pick. The output is always an H.264 MP4 that plays everywhere.
What is the difference between a crossfade and a hard cut?
A hard cut switches from one photo to the next instantly, like flipping slides. A crossfade smoothly blends the outgoing photo into the incoming one over a short overlap. Crossfades look more cinematic; hard cuts are faster to render and keep every photo on screen for its full time.
What does the Ken Burns effect do?
The Ken Burns effect slowly zooms into (or pans across) each photo so the still image feels alive instead of static. It is rendered with FFmpeg's zoompan filter. Because it re-renders every frame, it takes longer than a plain crossfade and is best used on a modest number of photos.
Can I add music to the slideshow?
This tool outputs a silent MP4 so the slideshow is always reliable and small. To add a soundtrack, open the finished MP4 in the Total Video Converter for Mac or Total Video Player Pro on your Mac, which can mux music and export to any format.
Is there a limit on how many photos or how large the file can be?
Because nothing is uploaded, there is no server size cap. The practical limit is your device's memory — a browser tab is limited to roughly 4 GB, so the tool warns you above about 40 photos or 200 MB of images and asks for confirmation before processing a very large set.
Why is my output smaller or larger than the original photos?
The output resolution is the size you choose (for example 1280x720), not the photos' native size. Large photos are downscaled to that frame, which is why a slideshow of huge images can still be a compact MP4. Pick a higher resolution preset if you need more detail.
Supported formats in detail
The tool accepts the common still-image containers browsers can decode: JPEG, PNG, WebP, GIF (only the first frame is used), BMP and TIFF. Internally each image is turned into a short clip at the chosen duration and frame rate, normalized to the same size and pixel format, then chained into a single H.264 MP4 with yuv420p and fast-start metadata for quick playback. When you enable the Ken Burns effect, each clip is generated with the zoompan filter at your chosen resolution before the chain is assembled. Transitions are handled with FFmpeg's xfade filter for crossfades or the concat filter for hard cuts. A resolution cap is applied only when it would downscale, never to enlarge, so small photos keep their native sharpness inside the frame.
Troubleshooting: when the slideshow does not go as expected
A photo will not load
Make sure you picked a real image file. Very large TIFF or camera RAW formats may not decode in the browser; convert them to JPG or PNG first. The tool reads the actual bytes, so the name just has to help it recognise the type.
The video is black or the wrong shape
That usually means the source aspect ratio is unusual. The tool pads (not stretches) to the chosen resolution, so a portrait photo in a landscape frame shows black bars — that is expected. Switch the resolution preset, or pick "Match the first photo", to change the framing.
Rendering is slow or runs out of memory
Big photo sets and the Ken Burns effect are memory-hungry. Reduce the number of photos, lower the output resolution, or turn Ken Burns off. Close other tabs first. For hundreds of photos, the desktop Total Video Converter for Mac is far faster.
I need a different output format or a soundtrack
This tool emits H.264 MP4 for maximum compatibility, with no audio. For MOV, MKV, AVI, a music track, or device-specific outputs, use the Total Video Converter for Mac, which also supports lossless stream-copy remuxing and batch queues.
When to use a desktop converter instead
The online photo-to-video tool is ideal for a one-off montage: a holiday recap, a product showcase, a quick tribute. It keeps things simple — drop photos, set timing, download.
If slideshows are part of your routine — weekly social posts, real-estate tours, or adding music and titles to every clip — a desktop app is the better fit. Total Video Converter for Mac uses your Mac's hardware encoders, handles queues of files, muxes audio, and writes to any format you need, while Total Video Player Pro plays and manages large libraries and can build playlists for playback. That is exactly what this free tool is here to point you towards.
Need to build slideshows regularly on your Mac?
Total Video Converter for Mac turns photos into videos with hardware-accelerated, batch processing — add music, titles and transitions, then export to MP4, MOV, MKV, AVI and more, with zero quality loss and no browser limits.