NeuralWriter
NeuralWriter is a free set of web-based writing and image tools, with browser-extension and API access also available.
What NeuralWriter is
NeuralWriter is a free set of web-based writing and image tools, with browser-extension and API access also available. Its writing tools cover paraphrasing, prompt generation, translation, summarization, word counting, and headline generation. The paraphraser has Light, Medium, and Hard modes and accepts up to 10,000 characters on the homepage. The prompt generator creates prompts for ChatGPT and GPT models, with a 10,000-character limit and support for 30 languages. Summaries can be set to 20%–90% of the source text, up to 10,000 characters. The word counter handles up to 25,000 characters and reports readability measures such as lexical diversity and Flesch Reading Ease. Other tools include an AI content detector with sentence highlights and a consensus verdict, plus image generation and upscaling. Image generation includes five aspect ratios and resolutions up to 8K; the upscaler lists output up to 4K. Listed web tools require no sign-up.
Good
- Free plan for online tools
- Paraphrasing has three modes
- Summaries allow adjustable output length
- Detector accepts text without sign-up
- Image upscaling supports output up to 4K
Watch out
- Individual tools have character limits
- API access is for paraphrasing
Who it suits
NeuralWriter suits writers and students who want several text tools in one place, as well as users looking for basic image generation and upscaling. Its API and Chrome extension may suit users who want paraphrasing beyond the website.
Verdict
NeuralWriter brings a range of writing utilities together with image tools, and its listed online tools are free. Check the character limits for the specific tool you plan to use.
Plans and prices
From NeuralWriter's own pricing page, checked 8 Oct 2026.
| Plan | Price | What it gives you |
|---|---|---|
| NeuralWriter free online tools | Free | No sign-up for listed web tools · individual tools show character limits up to 10,000 or 25,000 |
The facts
Each one read from NeuralWriter's own pages, with the date it was checked.
What it does
- AI content detector
- The detector compares text using five engines, provides sentence-level highlights and a consensus verdict, and accepts up to 10,000 characters with no sign-up required.checked 8 Oct 2026
- API
- NeuralWriter offers a paraphrasing API through RapidAPI, with demo access and Light, Medium, and Hard modes described on its API page.checked 8 Oct 2026
- Business use
- The terms state that the services are intended for business users.checked 8 Oct 2026
- Image generation
- The image generator offers prompt enhancement, negative prompts, image-to-prompt, five aspect ratios, HD through 8K resolutions, and JPG downloads without a watermark.checked 8 Oct 2026
- Image upscaling
- The image upscaler accepts PNG, JPG, JPEG, and WEBP and lists output resolutions up to 4K.checked 8 Oct 2026
- Languages
- The paraphrasing API page lists support for 30 languages.checked 8 Oct 2026
- Paraphrasing
- The paraphraser offers Light, Medium, and Hard modes and supports up to 10,000 characters on its homepage.checked 8 Oct 2026
- Privacy and content
- The privacy policy says personal data is used to provide and improve the service, while the terms say users retain ownership of uploaded content and grant NeuralWriter permission to process it to provide the service.checked 8 Oct 2026
- Prompt generator
- The prompt generator creates prompts for ChatGPT and GPT models and states a 10,000-character limit and 30-language support.checked 8 Oct 2026
- Summarizer
- The summarizer offers selectable output length from 20% to 90%, supports up to 10,000 characters, and identifies writers and students as intended users.checked 8 Oct 2026
- Support
- The API page directs users with API questions to contact NeuralWriter by email.checked 8 Oct 2026
- Word counter
- The word counter reports text counts and readability metrics including lexical diversity, average sentence length, and Flesch Reading Ease, with a stated limit of up to 25,000 characters.checked 8 Oct 2026
- Writing tools
- NeuralWriter offers paraphrasing, prompt generation, translation, summarization, word counting, and headline generation tools.checked 8 Oct 2026
Where it runs
- Browser extension
- The homepage invites users to install a Chrome extension and describes the paraphrasing service as free with the extension.checked 8 Oct 2026
The company
- Company location
- The site lists its contact location as Eixample, 08013 Barcelona, Spain.checked 8 Oct 2026
- Headquarters
- Eixample, Barcelona, Spainchecked 28 Sep 2026
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