QR code not scanning? Test images and practical fixes
Six downloadable QR images, exact reference outputs, and fixes for cropped, tiny, or unreadable codes.
Practical tool guides
Start with a specific file or input. Choose settings, check the output, and know when to keep the original.
Compress an image to 100 KB without guessing
A measured sample run, two reusable practice images, and a way to check size, transparency, and legibility before downloading.
When PDF compression makes a document larger
Download a text PDF and an image-only PDF, compare measured reference outputs, and see why searchable text matters.
Why two word counters can give different answers
Exact examples for Chinese, hyphenated words, emoji, blank lines, and the reading-time estimate used by OmniKit.
A time zone conversion needs a date, too
New York–Shanghai examples show seasonal offsets, skipped times, repeated times, and crossing into the previous day.
How to use these examples
Each guide identifies the tool, repeatable inputs, and known limits. Image and PDF practice files were created for OmniKit and contain no customer information. Text and time-zone examples were checked against the current tools. Example settings explain a decision; they do not promise the same result for every file.
Check the result against your destination’s requirements. If a guide and tool disagree, use the contact page to report the input, settings, and actual behavior. Contact and corrections →