Tips, Guides & Best Practices

Large images slow websites by 3–6s. Compress PNG, JPEG, and WebP to 96% smaller.

The format you choose is the biggest lever for image size. WebP is 30% smaller than JPEG at the same quality.

Drop an entire folder, compress everything in one click, download as ZIP.

PNG files are 5–10× larger than WebP. Convert any PNG to WebP in 3 clicks — 78% smaller.

JPEG doesn't support transparency. Convert to PNG for logos, icons, and UI elements.

Not all conversions are safe. PNG→WebP is lossless. PNG→JPEG always loses quality.

Exact pixel dimensions for Instagram, YouTube, Twitter, LinkedIn, Facebook, and OG images.

Resizing down is always safe. Resizing up blurs. The right way to stay sharp on every screen.

Hero images, blog posts, thumbnails, avatars — the right dimensions for every web context.

Instagram, profile photos, product listings — perfect 1:1 square in seconds.

Wrong ratio = auto-cropped images. Exact ratios for every major platform.

Turn any phone photo into a professional scanned document — no scanner needed.

Your phone camera + FileCrisp produces professional-quality scanned documents.

Adobe Acrobat costs $24/month just to sign PDFs. FileCrisp does it free.

Stop printing just to sign. Sign any PDF in your browser in 2 minutes.

These terms mean very different things legally. Here's exactly which one you need.

Gmail limits to 25 MB. Compress any PDF for email — free, nothing uploaded.

Structural compression keeps text selectable (10–60%). Rasterize maximises savings (50–90%).

Works on any device in any browser. No software install, done in 30 seconds.

Adobe costs $24/month just to merge. FileCrisp does it free in your browser.

Windows 11 has no built-in PDF merger. Here's the easiest free solution.

Export Word as PDF first, then combine both in FileCrisp in 30 seconds.

WhatsApp auto-compresses and ruins quality. Compress yourself at 70% first to stay in control.

Gmail limits to 25 MB. Outlook to 20 MB. Compress images before attaching — free, instant, no watermark.

YouTube thumbnails must be 1280×720, 16:9, under 2 MB. Resize any image in seconds — no watermark.

PDF too large to email? Gmail limits to 25 MB, Outlook to 20 MB. Compress PDF free — no Adobe, no upload.

One image or many. Choose A4, Letter, or fit-to-image. Free, in-browser.

Receipts, IDs, evidence photos — combine any images into a single PDF document.

Single page = 1 JPG. Multi-page PDF = ZIP with page-1.jpg, page-2.jpg, etc.

No Acrobat needed. Every PDF page → PNG or JPG, downloaded as a ZIP.