Guides, comparisons, and tips for working with files. All tools run 100% in your browser — no uploads, no sign-up.
You usually can't shrink a ZIP by re-zipping it — it's already compressed. Here's what actually makes a ZIP smaller, and how to hit a 1MB (or any) target. Free, browser-based, no uploads.
Understand the differences between common audio formats. Learn when to use MP3, WAV, AAC, OGG, and FLAC, and how to convert between them.
Step-by-step guide to reducing audio file sizes for email, WhatsApp, Telegram, and other messaging apps. Compress MP3, WAV, and other formats for free in your browser.
Learn how to reduce image file sizes for websites and social media. Step-by-step guide to compressing images for faster page loads without visible quality loss.
Step-by-step guide to reducing video file size so you can send it via email, WhatsApp, Telegram, and other messaging apps. Free, browser-based compression.
Upload limits for Instagram, TikTok, YouTube, X, and Facebook in one table, plus how to shrink a video to fit any cap for free, right in your browser.
Find out why your photos take up so much storage and learn simple ways to reduce their file size. Covers megapixels, formats, metadata, and compression.
Discord's free limit is 10MB (Nitro Basic 50MB, Nitro 500MB). How to get any video, image, or PDF under it without paying for Nitro, right in your browser.
Understand the differences between HEIC and JPG formats. Learn when to use each and how to convert HEIC to JPG for maximum compatibility.
Step-by-step guide to reducing PDF file size for Gmail, Outlook, and other email providers. Free, browser-based, no uploads.