Your files never leave the device
No upload, no temporary storage, no account. Compression runs in WebAssembly and WebCodecs inside your browser, it even works offline once the page has loaded.
Discord File Compressor
Compress images and videos entirely in your browser so they fit under the Discord upload limit. Your files never leave this device.
- Limits
- Free 20 MB / Nitro Basic 50 MB / Nitro 500 MB
- Privacy
- Nothing is uploaded, it runs in your browser
- Engine
- Rust/WASM for images, hardware WebCodecs for video
Sets the target file size
Target size 20 MB
Scales down proportionally, never crops. May shrink further if the target size demands it.
Compressed by default at near-lossless quality
Drop images or videos here
Or click to browse, or just hit Ctrl + V to paste a screenshot
Images: JPEG / PNG / WebP / GIF / BMP · Videos: MP4 / MOV / WebM / AVI
Results
Before / after
How it works
Three steps, all of it inside your browser. Nothing is sent anywhere along the way.
-
Pick your Discord plan
Free accounts use 20 MB, Nitro Basic 50 MB, Nitro 500 MB. You can also type your own target size.
-
Add your files
Drag and drop, click to browse, or paste a fresh screenshot with Ctrl + V. Multiple files at once are fine.
-
Download the result
Everything is processed locally. Download each file, or grab them all as a ZIP.
Discord upload limits by plan
These are the official limits as of August 2026. FitSize uses them as its default targets.
| Plan | Per-file limit | Resolution cap used here |
|---|---|---|
| Free account | 20 MB | 1280 px long edge |
| Nitro Basic | 50 MB | 1920 px long edge |
| Nitro | 500 MB | Original resolution |
Server Boost level 2 raises a server’s limit to 50 MB and level 3 raises it to 100 MB. If the server you post to is boosted, use the custom size field with that number.
What makes this different
Lands just under the limit
Instead of a fixed quality preset, a binary search closes in on the target byte size and keeps the highest quality that still fits. Files that already fit still get a visually lossless pass rather than being waved through.
Hardware video encoding
WebCodecs prefers your GPU encoder and uses variable bitrate, so the same file size looks cleaner. Unsupported browsers fall back automatically.
Audio kept intact
AAC audio is copied through without re-encoding, and its real size is subtracted from the budget so sound never pushes you over the limit.
EXIF stripped automatically
Re-encoding removes GPS coordinates, camera model and timestamps, so photos and screenshots do not leak your location.
Works on phones
The layout is fully responsive, pick a file straight from your camera roll instead of moving it to a computer first.
Frequently asked questions
Does FitSize upload my files to a server?
No. The entire compression pipeline runs in your browser and no code sends file contents anywhere. Open the Network tab in your developer tools and you will see zero upload requests after the page finishes loading.
How large a file can a free Discord account send?
Discord raised the free per-file limit from 10 MB to 20 MB in April 2026. Nitro Basic allows 50 MB and Nitro allows 500 MB. Separately, a server at Boost level 2 gets a 50 MB limit and level 3 gets 100 MB.
Why is my compressed video still over 20 MB?
Usually the clip is simply too long. If the bitrate is already at the floor and the file still does not fit, that duration cannot reach the target at watchable quality. Trim the video, or use the custom size field with a boosted server limit. The last attempt is kept so you can still download it.
Does compression hurt quality?
Some loss is unavoidable, but it is kept to a minimum. Images use a binary search for the highest quality that still fits the target, and videos use variable bitrate so complex scenes get more bits. When a file already fits the limit it is re-encoded at a visually lossless setting by default, usually a large saving you cannot see. Switch the “when the file already fits” option to keep the original if you would rather not touch it.
Should I choose WebP or JPEG?
At equal quality WebP is roughly 25–30% smaller than JPEG, and both the Discord web client and apps display WebP fine, so WebP is the default recommendation. Pick JPEG when the recipient needs to open the file in older software.
Which browsers are supported?
Image compression works in Chrome, Edge, Firefox and Safari. Hardware-accelerated video compression needs WebCodecs, which Chrome and Edge support best. Firefox and Safari fall back to a slower compatibility mode automatically.
Are there size or count limits?
Up to 30 files per batch. Per-file size depends on your device memory, a desktop handles roughly 1 GB videos fine, while phones are better kept under 300 MB.
Upload limits by platform
Not just Discord. Pick your destination and the tool loads the matching target size.
Senior-high portfolio (Taiwan) Documents capped at 4 MB, audio and video at 10 MB, 720p buys you 20 seconds. 4 MB / 10 MB Email attachments Gmail says 25 MB, but Base64 inflates files by a third, so the real ceiling is ~18 MB. 25 MB → 18 MB LINE video and photos Generous caps, frequent failures on mobile data, and LINE re-compresses on top. Aim under 50 MB Shopee product images 2 MB per image, 1:1 at 1024 px recommended, and a separate 30 MB video cap. 2 MB / 30 MB YouTube thumbnails 2 MB at 1280×720, and WebP is rejected outright, so the wrong format simply fails. 2 MB · JPEG Instagram posts Nothing fails to upload; Instagram just crushes your image. 1080 px is the number that matters. 1080 px WhatsApp Video sent as media caps at 16 MB, and photos get squashed to around 100 KB regardless. 16 MB WordPress uploads PHP ships with a 2 MB upload cap, and plenty of hosts will not let you raise it. 2 MB
Read next
Discord file size limits explained Real limits for Free, Nitro Basic, Nitro and boosted servers, plus every way around them. Video too large for Discord? Bitrate, resolution and trimming, step by step, with recommended numbers for common cases. WebP or JPEG: which to pick How the two formats compare on size, quality, transparency and compatibility inside Discord.