How We Test Our Tools
Before a tool is published
Every calculation a tool performs is checked against known, hand-verified examples before it goes live — for instance, a character counter is tested against text of a known, manually counted length, and a readability checker is tested against text with a previously published Flesch score to confirm the formula implementation matches.
Where the numbers come from
Tools that reference a platform's limits (character counts, image dimensions, truncation cutoffs) are built from that platform's publicly documented specifications. Where a platform doesn't publish an exact number — like the approximate character count before a caption folds behind "more" — we note that the figure is an approximation based on observed behavior, not an official published limit.
After publishing
Platform specifications change periodically. When we become aware that a limit has changed — through our own review or a report from a visitor — we update the tool and note the change. We don't claim perfect real-time accuracy against every platform update; treat these tools as a fast, convenient reference, and verify against the platform's own current guidelines for anything business-critical.
Found something wrong?
If a tool gives you a result that doesn't match what you see on a platform, please let us know through our contact page. Reports like this are how these tools stay accurate over time.