The BoltCompress Blog
Practical guides on video compression. Learn how to shrink files for WhatsApp, email, and YouTube, understand codecs and bitrate, and get the best quality at the smallest size.
MP4 vs MOV vs MKV vs WebM: Which Video Format Should You Use?
MP4, MOV, MKV, and WebM are containers, not codecs. Here is what each is actually good at and which one to choose.
Read guideHow to Compress a Video for Discord (Free Upload Limit Guide)
Discord rejects free uploads over 25 MB (10 MB in some servers). Here is how to fit a real video under the limit without it looking bad.
Read guideBitrate, Resolution, and File Size: How Video Compression Really Works
Bitrate, resolution, and frame rate are the three dials behind every video file. Understand them and compression stops feeling like guesswork.
Read guideHow to Compress a Video to Send by Email
Gmail and Outlook cap attachments around 20–25 MB. Learn how to fit a real video under that line, and when to use a link instead.
Read guideThe Best Video Compression Settings for YouTube Uploads
YouTube compresses your video again after you upload it. The trick is giving its encoder clean, high-quality source data to work from.
Read guideHow to Reduce MP4 File Size Without Losing Quality
"Without losing quality" really means without visible loss. Here are the levers that shrink an MP4 the most for the least visual cost.
Read guideH.264 vs H.265: Which Video Codec Should You Actually Use?
H.265 makes files roughly half the size of H.264 at the same quality, but compatibility is the catch. Here is how to choose.
Read guideHow to Compress a Video for WhatsApp Without Losing Quality
WhatsApp silently rejects or destroys large videos. Here is why it happens and a repeatable workflow to send clear clips every time.
Read guideReady to compress a video?
Put these guides into practice. Upload your video and optimize it for free in seconds.
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