Free Online Text Tools for Writing, SEO & AI
Free. Instant. Private.
Use free online text and AI tools to count words, characters, sentences and syllables, clean AI-generated text, calculate AI tokens and API costs, check keyword density and reading time, and format your text instantly.
No account, no complicated setup, and no need to upload your text.
- Instant results
- No sign-up
- Text stays on your device
Explore All CountFlows Tools
Choose a free tool to analyze, clean, or improve your text. Results appear instantly in your browser.
Text Cleaning and Formatting
AI Text Cleaner
Clean Markdown, unusual spacing, smart punctuation, and copy-paste formatting while preserving your original wording.
Invisible Character Detector
Detect zero-width spaces, non-breaking spaces, and other hidden Unicode characters that can affect copying, search, or formatting.
ChatGPT Watermark Remover
Clean hidden Unicode, zero-width characters, unusual spaces, and copy-paste artifacts from ChatGPT text.
Find & Replace Text
Find and replace words, phrases, characters, or multiple text values with advanced matching options.
Text Compare
Compare two texts online and instantly highlight added, removed, and changed text.
Remove Line Breaks
Strip unwanted line breaks from text pasted from PDFs, emails, documents, and websites.
Case Converter
Convert text to sentence case, Title Case, UPPERCASE, or lowercase in one click.
Reading and Speech
SEO Tools
Counting Tools
Word Counter
Count words, characters, and sentences as you type, with a word goal tracker and readability score.
Character Counter
Count characters with and without spaces, plus letters, lines, and paragraphs.
Sentence Counter
Count sentences and check your average sentence length for readability.
Syllable Counter
Count syllables in any word, line, or poem, including the 5-7-5 haiku pattern.
AI Token Counter
Count tokens for GPT-5, Claude, and Gemini instantly, with word and character counts side by side.
Text Generators
Coming next: Small Text Generator · SMS Segment Counter
Invisible Character Detector vs ChatGPT Watermark Remover
Use the Invisible Character Detector to inspect hidden Unicode in any text. Use the ChatGPT Watermark Remover when your question is specifically about hidden character artifacts in copied ChatGPT text.
General Unicode inspection
Invisible Character Detector
Find zero-width characters, unusual Unicode spaces and directional controls in text, code or copied data.
- Best for general hidden-character detection
- Shows Unicode code points and exact positions
- Useful for code, JSON, CMS and data debugging
ChatGPT-specific inspection
ChatGPT Watermark Remover
Check copied ChatGPT text for supported hidden Unicode and character-level artifacts associated with watermark-related searches.
- Best for ChatGPT-specific watermark intent
- X-Ray view of supported hidden characters
- Selective cleanup without rewriting the text
Which tool should you use?
The underlying characters may overlap, but the user intent is different.
| What you need | Invisible Character Detector | ChatGPT Watermark Remover |
|---|---|---|
| General invisible Unicode detection | Best choice | Supported |
| Zero-width character detection | Yes | Yes |
| Exact Unicode code points & positions | Yes | Yes |
| Code, JSON, CMS & data debugging | Best choice | Limited |
| Copied ChatGPT text inspection | Supported | Best choice |
| ChatGPT watermark-related questions | Not the main focus | Best choice |
Both tools inspect character-level text data rather than rewriting your content. If your problem is broader formatting such as Markdown, HTML, spacing or punctuation cleanup, use the AI Text Cleaner.
Platform Character Limits at a Glance
Most platforms cut your text at a fixed character limit. These are the ones writers hit most often.
| Platform / Field | Limit (characters) |
|---|---|
| X (Twitter) post | 280 |
| X Premium post | 25,000 |
| Instagram caption | 2,200 (about 125 shown before "more") |
| Instagram bio | 150 |
| LinkedIn headline | 220 |
| LinkedIn post | 3,000 |
Professional text tools for clean, accurate writing
After you confirm your character limits, the Syllable Counter helps you refine poems and spoken text, while the AI Text Cleaner removes hidden formatting, smart punctuation, and AI-generated artifacts.
Syllable Counter
Count syllables in words, lines, and poems and validate haiku with live 5-7-5 checks.
Try the Syllable Counter →
AI Text Cleaner
Strip markdown, smart quotes, invisible characters, and AI formatting noise before finalizing your copy.
Helps reduce AI detection signals across formatted text.
Try the AI Text Cleaner →
Need every limit — X Premium, Quora, Threads, Bluesky, meta descriptions? See the full Character Limits Cheat Sheet (2026) and check your text against it in real time.
Why Writers Use CountFlows
Private by design
Every tool runs entirely in your browser. Your text is never uploaded to a server, never logged, and never stored. Close the tab and it is gone.
Instant and unlimited
Counts update as you type. There is no button to press, no sign-up wall, no word limit, and no paywall. Paste a tweet or a whole novel.
Built for real limits
Essay word counts, platform caption limits, meta description lengths, and reading time built on published research averages (238 words per minute, Brysbaert 2019). Real numbers, not guesses.
Guides From the CountFlows Blog
Practical reading, writing, and word-count guidance for creators who want polished results faster.
Average Reading Speed: What's Normal and How to Test Yours
Research puts the adult average at 238 words per minute. See where you stand and how to test yourself in 3 minutes.
How to Calculate Words Per Minute Reading
The WPM formula with worked examples, plus the one conversion mistake that ruins most people's numbers.
How Long Does It Take to Read 10,000 Words?
About 42 minutes at an average pace. The full breakdown covers skimming, studying, and reading aloud.
How to Read Faster Without Losing Comprehension
Six habits that raise your pace without turning reading into skimming.
Who Builds CountFlows
CountFlows is built and maintained by Umair Tufail, a Content writer and Next.js developer focused on building practical, browser-based tools for writing, text analysis, SEO, and AI workflows. Every tool is designed to be simple, useful, and accessible without unnecessary signup requirements.
Have a tool request or found a bug? Contact us or read more about the site.
Frequently Asked Questions
Are the CountFlows tools free?
Yes. Every tool is completely free with no registration, no word limits, and no premium tier. The site is supported by ads, not subscriptions.
Is my text stored or uploaded when I use these tools?
No. All counting happens inside your browser on your own device. Your text is never sent to our servers, so there is nothing for us to store, read, or share.
Why does my word count differ from Microsoft Word or Google Docs?
Each program counts slightly differently. Hyphenated words, numbers, and symbols can be counted as one word or two depending on the tool. Differences of a few words on long documents are normal. For an assignment, always follow the count from the tool your instructor specifies.
How is reading time calculated?
We divide your word count by research-based averages: 238 words per minute for silent reading and 183 for reading aloud (Brysbaert, 2019). Your personal speed will vary, so treat the estimate as a starting point and test your own pace with the Reading Time Calculator.
Do in-text citations count toward my word count?
It depends on your institution. Many universities exclude reference lists but include in-text citations. Check your assignment brief first, then subtract your reference section from the total if it is excluded.
How do I count characters for Instagram, X, or SMS?
Paste your caption or message into the Character Counter and compare the result with the limit: 2,200 for Instagram captions, 280 for a standard X post, and 160 for one SMS.
Why is character count important for writers?
Many fields have hard limits: meta descriptions, social bios, ad headlines, and SMS all cut text past a fixed length. Counting characters before you publish prevents truncated titles and split messages.
What is a keyword density checker?
It shows how often each word or phrase appears in your text as a percentage of total words. Writers use it to keep keyword usage natural, since over-repeating a phrase reads badly and can trigger over-optimization signals in search engines.