Guides
Clear, practical guides to making videos, images and PDFs smaller, whatever device you use and wherever the file needs to go.
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How to Compress a Video
Everything you need to make video files smaller, from the basics to exact sizes, with clear examples.
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How to Compress a Video Without Losing Quality
What "lossless" really means for video, and the settings that shrink files without a visible difference.
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How to Compress a Video on iPhone
Shrink iPhone videos in Safari, record smaller files from the start, and send big videos by email.
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How to Compress a Video on Android
Shrink videos on any Android phone in the browser, trim them, and record smaller files.
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How to Compress a Video on Windows
Compress videos on Windows 10 and 11 in your browser or with the built-in Clipchamp editor.
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How to Compress a Video on Mac
Use QuickTime Player, Finder or your browser to make videos smaller on macOS.
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How to Email a Large Video
Attachment limits explained, plus how to make a video small enough to send, or share it another way.
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How to Send Large Videos on WhatsApp
Media or document, how WhatsApp's own compression works, and how to send big videos clearly.
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How to Compress a Video for Discord
Discord's current upload limits and the settings that keep clips sharp under 20 MB.
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How to Compress Images
Formats, quality settings and resizing explained, so your photos and graphics get small without looking worse.
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How to Compress a PDF
What makes PDFs large and how to shrink them while keeping text sharp and searchable.
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Video Formats and Codecs Explained
MP4, MOV, H.264, HEVC, bitrate and resolution in plain language, and which to choose.
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Not sure where to start?
- Sending a video somewhere specific? Start with email, WhatsApp or Discord.
- Using a particular device? See iPhone, Android, Windows or Mac.
- Worried about quality? Read how to compress without visible quality loss and video formats and codecs explained.
Every guide links to the matching compressor, which runs in your browser without uploading your files.