Every platform has a different limit
Twitter/X caps posts at 280 characters, SMS messages split into segments every 160 characters (or 70 for Unicode), Google truncates meta descriptions around 160, YouTube titles around 100 and Instagram captions around 2,200. Hitting any of these limits exactly is the difference between a tweet that reads cleanly and one that ends in a brutal ellipsis. Character Counter shows the live total plus the most common platform limits so you can write to spec on the first try.
Characters with and without spaces
Some platforms count whitespace toward the limit (Twitter, SMS, meta tags), others count only printable characters (some academic word-count limits, some legal filings). The tool shows both numbers side by side so you can choose the correct one for your context. Unicode emoji typically count as one or two characters depending on the platform — Twitter counts most flag emoji as two, for example.
Writing for SMS without surprise costs
Standard GSM-7 SMS supports 160 characters per segment; switch in even a single character outside the GSM alphabet (em-dash, curly quote, emoji) and the carrier downgrades the whole message to UCS-2, which caps at 70 characters per segment. Long messages are then split and billed per segment. If you are sending marketing SMS at scale, watch the character count and strip smart quotes before sending.
What Character Counter is built for
Character Counter solves a single, well-scoped task on files without the usual web-tool friction: no signup wall, no email gate, no upsell prompts, no watermark, no daily quota and no file-size limit beyond what your device's RAM allows. The interface is deliberately minimal — pick your input, set any options, click the action button, download the result. Everything from upload to download usually takes less than ten seconds. Because the tool focuses on a single job rather than trying to be a do-everything suite, the defaults are tuned for that job and rarely need adjustment.
How Character Counter runs in your browser
Most operations happen locally using modern browser APIs (Canvas, File, Web Workers, WebAssembly) so your data never has to leave your device. That matters for personal documents (IDs, statements, certificates), confidential business files (contracts, invoices), and anything else you'd rather not hand to a third-party server. Where a step genuinely needs server help (only true for AI-powered tools), we route through a trusted AI gateway and discard your input immediately after the response is returned. There is no analytics pixel attached to the file itself, no fingerprinting of the document, and no copy persisted in cloud storage.
Where Character Counter fits in a workflow
Real work is a chain of small steps: download a file → fix one thing → re-upload. Character Counter owns one link in that chain and tries to do it well — sharp output, predictable behaviour, no surprises. Pair it with the other free tools on this site (compressors, converters, resizers, PDF utilities, QR generators, AI writing helpers) to handle the entire chain without leaving the browser. The fewer tabs your workflow needs, the faster you finish, and the lower the risk of a sensitive file leaking through a third-party converter.
Free, private and unlimited use of Character Counter
There is no premium tier. The tool is free because hosting static JavaScript costs us almost nothing, and we'd rather earn trust than rent attention with paywalls. Use it once a year or a hundred times today — the experience is the same. If a tool ever does require a server call (AI features specifically), that call is metered at our cost, not yours, and you will never be asked for a credit card to access the basic functionality. We do not insert affiliate links into outputs, we do not stamp watermarks on downloads to push upgrades, and we do not impose 'pro' formats behind a paywall.
Browser support and device compatibility
Character Counter runs on every modern desktop browser (Chrome, Edge, Firefox, Safari, Brave, Arc) released after 2021, and on every modern mobile browser including iOS Safari and Android Chrome. There is nothing to install, no extension to approve and no permission to grant beyond standard file access when you pick an upload. On slower phones the heaviest tasks (image compression of multi-megabyte photos, PDF merges of long documents) may take a few extra seconds while the device's JavaScript engine catches up, but the work still completes locally. If you hit a memory error on a very low-end device, refresh the tab and try a smaller batch — every tool here is stateless, so a refresh is harmless.
Quality, security and trust
Because nothing is uploaded, there is no question of who can see your file in transit, where the server lives, or how long the provider retains a copy. The browser is the sandbox. The code that runs is the same code that ships to every visitor — auditable in the page source. We follow standard web security practice: HTTPS-only delivery, Subresource Integrity on third-party scripts, and a strict Content Security Policy that prevents arbitrary third-party code from running on the page. For organisations that need to demonstrate due diligence on a 'no data leaves the device' claim, the network tab in any browser's developer tools confirms that processing a file generates zero outbound requests with file contents attached.
Tips for getting the best result with Character Counter
Start from the highest-quality source you reasonably can — Character Counter preserves quality but cannot invent detail that isn't in the input. For images, prefer the original camera file over a screenshot of a screenshot. For PDFs, prefer the digitally generated original over a phone photograph of a printout. If a step in your workflow is going to compress or downscale, do it last, so each earlier step still has full information to work with. And when a portal you are uploading to enforces an awkward limit (a strict 50 KB cap, an obscure aspect ratio, a single-page-only restriction), check the tool list — there is almost certainly a dedicated tool here that handles that exact constraint without you needing to learn the maths.