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Every tool on Inside AI in one place, sorted by category. Search by name or jump to a category. All free, with no sign-up.
AI Tools21 tools
Open category →AI Token CounterPaste any text and see roughly how many tokens it uses before you send it to an AI model.AI API Cost CalculatorWork out what a prompt costs per request, per day and per month, and compare two models side by side.AI Text CleanerStrip markdown symbols, stray dashes and odd spacing from chatbot output.Prompt GeneratorPick the task, tone and format and get a clean, structured prompt.AI Image Size ToolFind the right aspect ratio and pixel size for AI image generators.Words to Tokens ConverterQuick token estimate from a word or character count, and back again.Free Markdown to Word ConverterConvert Markdown or AI chat output to a Word .docx file.Free Claude Token CounterEstimate Claude token counts for prompts and documents.Free GPT Token CounterCount tokens with the o200k_base tokenizer and see how text is split.Free AI Context Window CheckerCheck if your text fits popular AI model context windows.Free AI Model Price ComparisonCompare Claude, GPT and Gemini API costs for your own usage.Free AI Paraphrasing ToolRewrite text with AI in seven modes, from formal to simple. Free, no signup.Free AI Text SummarizerSummarize long text with AI into a paragraph, bullets or key takeaways.Free AI Grammar CheckerFix grammar, spelling and punctuation with AI and see each change explained.Free AI Meta Title and Description GeneratorGenerate three SEO title and meta description options with a search preview.Free AI Prompt ImproverTurn a rough idea into a clear, effective prompt for any AI tool.Free AI Email WriterTurn a few key points into a clear email with a subject line.Free AI Blog Title and Outline GeneratorGet eight blog title ideas and a ready outline from any topic.Free AI Text HumanizerMake stiff, robotic text sound natural while keeping the meaning.Free AI Keyword Ideas GeneratorGet grouped keyword ideas with intent labels and question searches.Free AI FAQ GeneratorCreate FAQ questions and answers, with FAQ schema to copy.
SEO Tools14 tools
Open category →SERP Preview & Meta CheckerSee your title and description as Google shows them, measured in pixels.Schema Markup GeneratorFAQ, Article, LocalBusiness, Video and more as valid JSON-LD.Robots.txt GeneratorBuild a clean robots.txt with sitemap and crawl rules..htaccess Redirect Generator301s, HTTPS and www rules without writing them by hand.Open Graph GeneratorBuild and preview share cards for Facebook, X and LinkedIn.Keyword Density CheckerSee how often each word and phrase appears in your copy.Free Slug GeneratorTurn titles into clean, SEO friendly URL slugs.Free Title Case ConverterCapitalise headlines in proper title case.Free Meta Tag GeneratorGenerate SEO and social meta tags and copy the HTML.Free Hreflang Tag GeneratorGenerate hreflang tags for multilingual and multi-region pages.Free Readability CheckerCheck readability with Flesch reading ease and grade level.Free XML Sitemap GeneratorGenerate sitemap.xml from a list of URLs and download it.Free Robots.txt TesterCheck if a URL is allowed or blocked and which rule decided it.Free XML Sitemap ValidatorCheck a sitemap for errors, duplicates and bad dates.
AI Search Tools5 tools
Open category →llms.txt GeneratorCreate the llms.txt file that helps AI assistants understand your site.AI Crawler Robots.txt BuilderAllow or block GPTBot, ClaudeBot, PerplexityBot and more with toggles.AI Bot User-Agent ListEvery major AI crawler, who runs it and what it is used for.Free AI Crawler Access CheckerSee which AI bots your robots.txt allows or blocks.Free LLMs.txt ValidatorCheck an llms.txt file for structure and link format problems.
Image Tools21 tools
Open category →Free HEIC to JPG ConverterConvert iPhone HEIC photos to JPG or PNG. Batch convert, nothing uploaded.Free Image CompressorShrink JPG, PNG and WebP images in your browser. Download a ZIP of the results.Free Image ResizerResize by pixels, percentage or common sizes. Batch resize with no upload.Free WebP to JPG ConverterTurn WebP images into JPG or PNG files that open anywhere.Free PNG to JPG ConverterConvert PNG images to JPG with adjustable quality. Batch and ZIP download.Free JPG to PNG ConverterConvert JPG or JPEG photos to lossless PNG files. Batch and ZIP download.Free Image to WebP ConverterConvert JPG and PNG images to smaller WebP files for faster websites.Free Image to Base64 ConverterConvert an image to a Base64 data URI, or decode Base64 back to an image.Free Image CropperCrop photos to a ratio or custom area and download in PNG, JPG or WebP.Free SVG to PNG ConverterConvert SVG vector files to PNG at any size, with optional background.Free Favicon GeneratorCreate favicon.ico and PNG icon sizes from one image, with the head code.Free Compress Image to 20KBGet an image under 20 KB without installing anything.Free Compress Image to 50KBGet an image under 50 KB without installing anything.Free Compress Image to 100KBGet an image under 100 KB without installing anything.Free Compress Image to 200KBGet an image under 200 KB without installing anything.Free Passport Size Photo MakerCrop to passport or visa size and print a sheet of copies.Free Add Watermark to ImageAdd a text or logo watermark to many images at once.Free EXIF Data Viewer and RemoverSee and strip hidden location and camera data from photos.Free AVIF to JPG ConverterTurn AVIF images into JPG or PNG files that open anywhere.Free Social Media Image ResizerResize and crop images for Instagram, Facebook, YouTube and more.Free Add Text to ImageWrite text on a photo and drag it where you want it.
PDF Tools13 tools
Open category →Free JPG to PDF ConverterCombine images into one PDF. Reorder pages and pick a page size.Free PDF CompressorMake a PDF smaller for email and upload forms.Free PDF MergerJoin several PDF files into one. Reorder them, with no upload.Free PDF SplitterExtract pages or split a PDF into single pages, privately.Free PDF to JPG ConverterConvert PDF pages to JPG or PNG images at 72, 150 or 300 DPI.Free Rotate PDFRotate single PDF pages or a whole document and save the corrected file.Free Delete PDF PagesRemove unwanted pages from a PDF by clicking thumbnails or entering ranges.Free Add Page Numbers to PDFAdd page numbers to a PDF with custom position, format and start number.Free Watermark PDFAdd a text watermark to PDF pages with custom angle, colour and opacity.Free Organize PDF PagesReorder, rotate and delete pages with drag and drop.Free Sign PDFAdd your drawn, typed or uploaded signature to a PDF.Free Extract Images from PDFSave the pictures inside a PDF as PNG files.Free PDF to TextExtract the text from a PDF and copy or download it.
Utility Tools16 tools
Open category →Free JSON Formatter and ValidatorFormat, validate and minify JSON with line and column errors.Free QR Code GeneratorMake QR codes for links, Wi-Fi, email and more. Download PNG or SVG, no expiry.Free Text to SpeechListen to any text read aloud with your device voices. No character limit.Free UTM Link BuilderBuild campaign links with consistent UTM tags and copy them in one click.Free Markdown to HTML ConverterConvert Markdown to clean HTML with a live preview, copy and download.Free Word CounterCount words, characters, sentences and reading time instantly.Free Case ConverterSwitch text between uppercase, lowercase, title, sentence, camel and snake case.Free Password GeneratorGenerate strong random passwords with custom length and characters.Free Lorem Ipsum GeneratorGenerate lorem ipsum placeholder text by paragraphs, sentences or words.Free Base64 Encode and DecodeEncode text to Base64 or decode Base64 back to text, UTF-8 safe.Free Color PickerPick a colour and copy its HEX, RGB and HSL values.Free Text Diff CheckerCompare two texts and highlight added and removed lines.Free Remove Duplicate LinesRemove repeated lines from a list and keep one copy of each.Free Color Contrast CheckerTest text and background colours against WCAG AA and AAA.Free JSON to CSV and CSV to JSON ConverterConvert JSON to CSV or CSV to JSON in your browser.Free JWT DecoderRead a JWT header and payload and check when it expires.
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