# NeuralWriter > NeuralWriter is a suite of free AI tools for writing, content analysis, and image generation. All tools run in the browser, require no sign-up, and support 27–30+ languages. Last updated: 2026-05-28. Version: 1.2. Website: https://neuralwriter.com Contact: service@neuralwriter.com Founded: 2022-04-15 ## About NeuralWriter launched on 2022-04-15 as a free AI paraphrasing tool. The product expanded over the following years into a multi-tool platform covering text rewriting, summarization, AI-content detection, headline and prompt generation, translation, word counting, text-to-image generation, image upscaling, and developer APIs. The paraphraser remains the flagship tool and lives at the site root. Everything stays free with no sign-up; a free Chrome extension unlocks Medium/Hard paraphrasing modes and unlimited image generations. --- ## Paraphrasing Tool URL: https://neuralwriter.com/ The flagship NeuralWriter tool. A free online AI paraphraser (rewriter) that rephrases sentences and rewords paragraphs while preserving meaning. Unlike basic synonym spinners, the model analyzes whole paragraphs and rewrites them naturally so output reads as human-written and is unlikely to be flagged by plagiarism or AI-detection checks. Key facts: - Price: free, no sign-up required. - Character limit: up to 10,000 per request. - Languages: 30+ (English, Spanish, French, German, Italian, Portuguese, Dutch, Polish, Swedish, Finnish, Turkish, Russian, Ukrainian, Arabic, Chinese, Japanese, Korean, Indonesian, and more). - Modes: - Light — fast, minor changes, preserves meaning fully. - Medium — slower, significantly more unique output, most popular mode. - Hard — slowest, highest uniqueness, may slightly shift meaning (requires installed Chrome extension). - Includes a side-by-side diff checker so users can see which words and phrases were replaced. - Output is designed to humanize AI-generated text and bypass AI-detection systems. Common use cases: rewriting articles, essays, student papers, blog posts, and any content where uniqueness or anti-plagiarism is required. --- ## Summarize Tool URL: https://neuralwriter.com/summarize-tool A free online text and article summarizer. Uses Natural Language Processing (NLP) plus an AI model to extract key fragments and produce a shorter version of the source text. Supports both extractive (key-sentence selection) and abstractive (rephrased) summarization. Key facts: - Price: free, no sign-up. - Character limit: up to 10,000. - Languages: 27+. - Output length: adjustable from 20% to 90% of the original. - Universal AI model — no mode selection needed. Use cases: condensing research papers, news articles, long blog posts, and lecture material for writers, students, and analysts. --- ## AI Content Detector URL: https://neuralwriter.com/content-detector-tool A free multi-engine AI text checker. Runs the same text through five separate detectors in parallel (QuillBot, ZeroGPT, Originality.ai, Copyleaks, Winston AI), combines their scores into a consensus verdict, and highlights AI-written sentences inline. Key facts: - Price: free, no sign-up. - Character limit: up to 10,000 (minimum 20). - Languages: 30+. - Detection engines: QuillBot, ZeroGPT, Originality.ai, Copyleaks, Winston AI (all run in parallel on each request). - Detects output from: ChatGPT (GPT-5, GPT-4o, o1), Claude, Gemini, Llama, Mistral, DeepSeek, and other modern LLMs. - Output: HUMAN / MIXED / AI GENERATED verdict stamp with consensus percentage (HUMAN ≤15%, MIXED ≤40%, AI above 40%), plus per-sentence colour-coded underlines (green ≤30%, yellow 31–60%, red above 60%) with hover tooltips showing the exact AI score per sentence. - Each engine's individual score is shown side by side so you can spot outliers. - Suitable formats: essays, articles, blog posts, emails, copywriter submissions, student assignments. --- ## Headline Generator URL: https://neuralwriter.com/headline-tool An AI title / headline generator for articles, blogs, news, YouTube videos, and Twitch streams. Scans the input text, extracts main themes, and produces headline candidates. Key facts: - Price: free, no sign-up. - Languages: 30. - Title styles: Ordinary, Catchy, Clickbait, Creative, YouTube, Twitch. - Speed: instant generation. - Input: paste an article, blog post, or news text and select the style. --- ## ChatGPT Prompt Generator URL: https://neuralwriter.com/prompt-tool Expands a short user idea into a detailed, structured prompt optimized for ChatGPT and GPT-4. Backed by an internal prompt library plus AI-based expansion. Key facts: - Price: free, no sign-up. - Languages: 27+. - Compatible with all ChatGPT model versions. - Character limit: up to 10,000. - Speed: instant generation. Use cases: writers, students, researchers, and creators who want higher-quality ChatGPT output without hand-crafting prompts. --- ## AI Image Generator URL: https://neuralwriter.com/image-generator-tool A free text-to-image generator. Accepts a prompt or a reference image, applies a chosen style and aspect ratio, and returns a downloadable JPG. Key facts: - Price: free, no sign-up required (daily limit applies; unlimited generations available via the browser extension). - Input: text prompt and/or uploaded reference image. - Controls: style preset, aspect ratio / resolution, negative prompt (e.g., "blurry, watermark, extra limbs, low quality"). - AI Improve: rewrites a basic prompt with more detail about style, lighting, and composition. - Image-to-prompt: upload an image and the tool returns a prompt that describes it. - Output: downloadable JPG. - Previously generated images are saved in the session for re-download. Disclaimer: users are solely responsible for generated content; NeuralWriter bears no liability for output use. --- ## AI Image Upscaler URL: https://neuralwriter.com/image-upscaler-tool A free AI photo enhancer that upscales images without losing quality. Detects and refines edges, textures, and patterns, then fills detail to match the original style. Key facts: - Price: free, no sign-up. - Input formats: JPG, JPEG, PNG, WebP. - Output resolutions: 480p, 720p, 1080p, 1440p, 2K, 4K. - Works well with Midjourney and DALL·E outputs. - Free download of the enhanced image. Use cases: enhancing AI-generated images, restoring low-resolution photos, prepping visuals for print or presentations without Photoshop skills. --- ## Word Counter URL: https://neuralwriter.com/word-counter-tool A text analysis tool for writers, SEO specialists, and SMM managers. Computes counts and several content-quality metrics in real time. Key facts: - Price: free, no sign-up. - Character limit: up to 25,000. - Languages: 30+. - Basic counts: words, characters, characters without spaces, words without numbers, sentences, paragraphs, syllables. - Time estimates: reading time, speaking time. - Keyword density: x1, x2, x3 word-frequency analysis. - Advanced metrics: - ATN — Academic Text Nausea (over-repetition score). - LD — Lexical Diversity (vocabulary richness). - ASL — Average Sentence Length. - FRE — Flesch Reading Ease score. - Per-block analysis available for Post, Title, and Description. --- ## Translator URL: https://neuralwriter.com/translate-tool A free AI-based translator using neural networks and NLP for natural, accurate translation. Key facts: - Price: free, no sign-up. - Character limit: up to 10,000 per request. - Speed: high-quality output in seconds. - Structured-format translation: preserves HTML, JSON, XML, and Markdown structure — translates only the human-readable parts. Recognizes attributes like `alt=""`, `title=""`, and `content=""` for SEO-friendly translation. Particularly useful for translating i18next locale files. --- ## Paraphrasing API URL: https://neuralwriter.com/paraphrasing-api REST API version of the Paraphrasing Tool, distributed via RapidAPI. Key facts: - Three rewriting modes: Light, Medium, Hard. - 30 languages: English, Arabic, Chinese, German, French, Japanese, Italian, Spanish, Portuguese, Ukrainian, Indonesian, Finnish, Polish, Dutch, Swedish, Turkish, Russian, Kazakh, Azerbaijani, Uzbek, Bulgarian, Czech, Danish, Korean, Estonian, Greek, Hungarian, Latvian, Lithuanian, Romanian. - Character limit: 10,000+ per request. - No daily limit on calls. - Free demo plan available on RapidAPI. - Common use case: post-processing ChatGPT output to bring AI-detection scores from ~72% human to ~98% human. Contact for API questions: service@neuralwriter.com. --- ## Use cases - **Humanize a ChatGPT essay.** Paste the AI output into the Paraphrasing Tool and run Medium or Hard mode. NeuralWriter measures human-likelihood lifting from ~72% to ~98% on the same text. - **Skim a long article.** Drop the source into the Summarize Tool and set the output length to 20–40%. Faster than reading the original; preserves the main argument. - **Vet a student paper or copywriter submission.** Paste the text into the AI Content Detector. Five engines (QuillBot, ZeroGPT, Originality.ai, Copyleaks, Winston AI) run in parallel and return a consensus HUMAN / MIXED / AI verdict, plus per-sentence underlines that show exactly which paragraphs look machine-written. - **Brainstorm a headline.** Paste the article into the Headline Generator and switch styles (Ordinary / Catchy / Clickbait / Creative / YouTube / Twitch) until one fits. - **Cover image for Google News, YouTube, or a blog.** Use the AI Image Generator: pick 16:9 and 2K or 4K, click ✨ AI Improve to expand a one-line idea, download the JPG. No watermark. - **Match an existing image style.** Upload a reference image to the Image Generator's image-to-prompt feature; get back a prompt (and a negative prompt) that reproduces a similar look. - **Upscale Midjourney/DALL·E output for print.** Send the original to the Image Upscaler and choose 4K. - **Audit blog post readability.** Paste into Word Counter to see Flesch Reading Ease, lexical diversity, average sentence length, and keyword density. - **Translate an i18next JSON file.** Use the Translator — HTML/JSON/XML/Markdown structure is preserved; `alt=""`, `title=""`, and `content=""` attributes are recognized. - **Build a SaaS feature on top of paraphrasing.** Use the Paraphrasing API (27 languages, 3 modes, no daily limit) via RapidAPI with a free demo plan. ## FAQ **General** - **Is NeuralWriter really free?** Yes. Every web tool is free with no sign-up, no credit card, no watermark on outputs. A free Chrome extension unlocks Medium/Hard paraphrasing modes and unlimited image generations. - **Do I need an account?** No. Paste, click, get the result. There is no registration flow. - **How many languages are supported?** 27–31 per tool: Paraphraser, AI Detector, Word Counter (30+); Headline Generator (30); Summarizer, Prompt Generator (27+). Translator covers all the same plus more. - **Is there a paid plan?** Only for the developer API — the Paraphrasing API is distributed via RapidAPI with a free demo plan. **Paraphrasing** - **Does the paraphraser bypass AI-detection and plagiarism checks?** Yes. The model rewrites whole sentences rather than swapping synonyms, so the output reads as human-written. Medium and Hard modes give the strongest results. - **What's the difference between the three modes?** Light is fast with minor changes and full meaning preservation. Medium produces significantly more unique text with most sentences rewritten — the most popular mode. Hard rewrites aggressively with the highest uniqueness; meaning may shift slightly. - **Is paraphrasing legal?** Yes. You aren't copying exact text — you're retelling the meaning in different words. - **Does paraphrasing count as plagiarism?** Basic synonym spinners often produce text flagged as plagiarized. NeuralWriter rephrases entire sentence structures, which is far less likely to be flagged. **Summarize** - **What's the difference between summarizing and paraphrasing?** Summarizing shortens the text and keeps only the key points. Paraphrasing rewrites the full text in different words while keeping the original length and meaning. - **How much can I shorten the text?** Adjustable from 20% to 90% of the source length. **AI Content Detector** - **Which AI models does it recognize?** ChatGPT (GPT-5, GPT-4o, o1), Claude, Gemini, Llama, Mistral, DeepSeek, and other modern LLMs. - **Which detection engines does it use?** Five run in parallel on every request: QuillBot, ZeroGPT, Originality.ai, Copyleaks, Winston AI. The final verdict is the consensus average; individual scores are shown side by side. - **How is the verdict calculated?** Average the five engine scores; ≤15% = HUMAN (green stamp), ≤40% = MIXED (yellow), above 40% = AI GENERATED (red). - **Does it show which sentences are AI?** Yes. Every sentence is underlined green / yellow / red by its own AI score; hover any sentence to see the exact percentage. - **How do I bypass AI detection?** Light paraphrasing rarely fools all five engines at once. Medium or Hard mode in the Paraphrasing Tool gives the best results, but original content or proper citation is always the safer route. - **Are AI detectors accurate?** They're trained on large datasets and improved continually. Accuracy is high but not perfect — use the percentage as a strong signal, not a verdict. **Image Generator** - **What is a negative prompt?** A list of things to leave out: `blurry, watermark, low quality, extra fingers, deformed hands, text, signature`. Use it when the first try has artefacts. - **How does ✨ AI Improve work?** It rewrites your prompt with more detail about composition, lighting, and style, and suggests a matching negative prompt. The original wording stays visible for comparison. - **Can I get a prompt from an existing image?** Yes — upload any reference image and receive a prompt that would produce something similar. - **What's the difference between HD, 2K, 4K, and 8K?** Real images at the corresponding pixel density. HD for drafts and social, 2K for web headers, 4K for print and hero images, 8K for billboards or content viewed up close. **Image Upscaler** - **Does it work with Midjourney and DALL·E?** Yes. The upscaler is designed to enhance AI-generated images alongside ordinary photos. - **Which formats are supported?** JPG, JPEG, PNG, and WebP. Output goes up to 4K. **Translator** - **Will it break my HTML or JSON?** No. Structure is preserved; only the human-readable parts are translated. SEO-relevant attributes (`alt`, `title`, `content`) are recognized. **Limits** - **What's the character limit?** 10,000 per request for the Paraphraser, Summarizer, AI Detector, Translator, and Prompt Generator. Word Counter allows up to 25,000. ## Company - Domain: https://neuralwriter.com - Founded: 2022-04-15 (started as the Paraphrasing Tool, expanded into a multi-tool platform). - Support email: service@neuralwriter.com - Browser extension: available for Chrome (unlocks Medium / Hard paraphrasing modes and unlimited image generations, free forever). - Legal: [Privacy Policy](https://neuralwriter.com/privacy-policy), [Cookies Policy](https://neuralwriter.com/cookies-policy), [Terms of Service](https://neuralwriter.com/terms-of-service).