ToolStackTools is a collection of 140+ free web-based utilities. PDF, image, calculator and generator tools run entirely in your browser — your files never leave your device. AI tools work without signup for your first two generations, then use free monthly credits.
Free online PDF tools to convert, merge, split, compress, rotate, and protect PDF files. No installation needed.
Free online calculators for VAT, percentages, loans, mortgages, tips, BMI, and more. Instant results with no signup required.
Free AI writing tools to summarize text, rewrite paragraphs, fix grammar, generate essays, stories, and poems. Get 100 free credits on signup.
Free AI tools for social media: generate captions for Instagram, TikTok, YouTube, Twitter, LinkedIn, and more. Free credits on signup.
Free AI marketing tools: generate ad copy, email campaigns, landing page copy, slogans, press releases, and more.
Free AI business tools: generate resumes, cover letters, business plans, proposals, job descriptions, and more.
Free AI utility tools: translate text, extract keywords, format text, generate quotes, analyze headlines, and more.
Free online generators for random numbers, names, passwords, colors, usernames, and more.
Free online image tools to compress, resize, convert, crop, and rotate images. Browser-based processing for privacy.
Free AI personal tools: generate apology letters, birthday messages, wedding speeches, complaint letters, and more.
Free AI branding tools: generate brand names, taglines, and social media threads for your business.
Extract readable PDF text into a real editable .docx document. Original layout, tables and images are not preserved; scanned pages need OCR, which is not included.
Stitch several PDFs into one file — cover letter + CV, or scanned pages that arrived one at a time.
Optimize PDF structure without rasterizing, or choose stronger JPEG page compression for scans. JPEG mode removes searchable text, links, forms and signatures. If the result is larger, the original file is returned.
Turn a stack of phone photos or scans into one PDF — the format receipts, forms and portals actually accept.
Compress images to reduce file size
Remove white or near-white backgrounds connected to the image edge. Enclosed white details are kept. This tool does not isolate subjects on colored or complex backgrounds.
Convert images between formats
Generate QR codes from text or URLs
Generate strong, secure passwords
Work out what to charge with VAT on top, or pull the VAT back out of a gross price — the two calculations freelancers and shoppers actually need.
Solve the three percentage questions people actually get stuck on: X% of Y, what percent X is of Y, and the change from X to Y.
Break the blank page: get an intro, three body paragraphs and a conclusion you can rewrite, keep or throw away.
Utility tools (PDF, image, calculators, generators) are 100% free with no signup. AI writing tools give you 2 free generations per month with no signup, plus 100 bonus credits when you create a free account.
No. Every PDF and image tool runs entirely in your browser. Your files are never uploaded to a server.
No account is needed for the utility tools. Sign up only if you want more free AI writing credits.