The ideal email subject line is 30–50 characters — iPhone cuts off near 40. See what every inbox displays, preheader length, and what open-rate data says.
The Common App essay limit is 650 words (250 minimum), hard-enforced. See how words are counted, the ideal length, and how to trim a draft that runs over.
Google Ads allows 30-character headlines and 90-character descriptions. See every 2026 limit — RSAs, sitelinks, Performance Max — and how to write to fit.
Reddit titles cap at 300 characters, posts at 40,000, comments at 10,000 — but subreddits can set stricter rules. Every 2026 Reddit limit, plus the catches.
WhatsApp messages allow 65,536 characters, but Status caps at 700 and the Business API at 4,096. See every 2026 WhatsApp limit and which one applies to you.
The UCAS personal statement limit is 4,000 characters including spaces — about 650 words. See what counts, the Word-vs-UCAS trap, and how to trim to fit.
Threads posts are capped at 500 characters, with 10,000-character text attachments for long-form. See every 2026 Threads limit and how it compares to X.
1,000 characters is roughly 140–200 words — about 2–3 paragraphs. See the full conversion chart, real examples, and whether your limit counts spaces.
Discord messages max out at 2,000 characters, or 4,000 with Nitro. See every 2026 limit — bios, servers, bot embeds — and what secretly eats your count.
Facebook posts allow a huge 63,206 characters, but only ~477 show before “See more.” Get every 2026 Facebook limit and the post length that earns engagement.