Guides
Plain answers to the questions that come up around our tools, backed by numbers we measured or worked out ourselves, with the method shown.
Image Compressor & Resizer
Open tool- JPEG, PNG, WebP or AVIF: Which Image Format to UseMeasured file sizes for JPEG, PNG and WebP at four quality settings on six test images, and plain rules for choosing a format for photos, screenshots and logos.
- How to Get an Image Under 200 KB, 500 KB or 1 MBMeasured width and quality settings that bring real photos under 200 KB, 500 KB and 1 MB, and why you should shrink the pixel size before lowering quality.
- What Pixel Size Should an Image Be? Web, Email, Print and DPI ExplainedPixels needed for common print sizes at 300 and 150 DPI, why high-density screens need 2x images, and sensible widths for web pages, email and documents.
QR Code Generator
Open tool- Static vs Dynamic QR Codes: Expiry, Tracking and When Each Makes SenseA static QR code stores your content directly; a dynamic one stores a redirect link. Why dynamic codes expire or get paywalled, and when each type is right.
- How Big Should a QR Code Be? Print Size, Scan Distance and ContrastThe 10:1 scan distance rule, the four-module quiet zone, how content length sets the QR version, and module sizes when printing at 2, 3 and 5 cm wide.
Word Counter
Open tool- How Many Words? Typical Lengths for Essays, Articles, Descriptions and MoreTypical word counts for essays, blog posts, cover letters and product descriptions, plus the character limits behind page titles, meta descriptions and SMS.
- How Reading Time Is Calculated (and Why 238 Words per Minute)Where the 238 words-per-minute figure comes from, how silent reading differs from reading aloud, a word count to minutes table, and what slows readers down.