Use AI without leaking data or guessing costs.
Private tools for ChatGPT, Claude and Gemini users: strip personal details, catch leaked keys, count tokens before you pay. Plus the everyday utilities you expect. Everything runs in your browser, with no signup and no uploads.
AI trust & control
Check what you send to a chatbot, what it costs, and what comes back. Nothing you paste leaves your browser.
PII Redactor
Hide names, emails and phone numbers before you paste into ChatGPT, then put them back in the reply.API Key & Secret Scanner
Catch API keys, tokens and passwords in code or logs before they reach a chatbot.Token Counter & Cost Calculator: GPT, Claude, Gemini, DeepSeek and more
Count tokens and estimate API cost for GPT, Claude and Gemini models.LLM API Cost Calculator: monthly cost for GPT, Claude, Gemini and more
Estimate your monthly API bill across models before you build, and compare it with a chat plan.Tokenizer Visualizer
See how GPT models split your text into tokens, piece by piece.AI Prompt Optimizer
Spot missing role, format and tone instructions, and get a clearer prompt.AI Output Diff
Compare two AI answers or drafts and see exactly what changed.
Everyday utilities
Text, images, money, code, security and conversions. Same rules: free, private, in your browser.
Free Online Word Counter
Count words, characters, sentences, and paragraphs instantly. Estimate reading time. No signup needed — works in your browser.
Free Online Case Converter
Convert text between uppercase, lowercase, title case, camelCase, snake_case, kebab-case, and more. Instant, free, no signup.
Free Online Password Generator
Generate strong, secure passwords with custom length and character options. Uses cryptographic randomness. No signup required.
Free AI Background Remover
Remove image backgrounds instantly with AI — 100% free, no signup, no upload to any server. Runs entirely in your browser.
Free Image Compressor & Resizer
Compress, resize, and convert images to PNG, WebP, JPEG, or AVIF — 100% free, no upload, runs entirely in your browser. Social media presets, scale by percentage, and more.
Remove EXIF & Metadata from Photos
Remove hidden EXIF data — GPS location, camera model, timestamps — from JPEG, PNG, and WebP photos. 100% free, no upload, runs entirely in your browser.
Free Compound Interest Calculator
Calculate compound interest with monthly contributions, multiple compounding frequencies, and year-by-year breakdown. Free, no signup.
Free Mortgage Calculator
Calculate monthly mortgage payments, total interest, and view an amortization schedule. Includes property tax and insurance. Free, no signup.
Free Salary Calculator
Convert between hourly wages and annual salary. See daily, weekly, bi-weekly, and monthly breakdowns. Free, no signup.
Free JSON Formatter & Validator
Format, validate, and minify JSON instantly. Pretty-print with custom indentation, sort keys, view stats — 100% free, no data leaves your browser.
Free Base64 Encoder & Decoder
Encode text or files to Base64 and decode Base64 back to text — instantly, free, and 100% in your browser. Supports Unicode and file uploads.
Free Online Unit Converter
Convert between metric and imperial units instantly. Length, weight, temperature, volume, speed, area, and digital storage — all in your browser.
Free Online Color Converter & Picker
Convert colors between HEX, RGB, and HSL formats instantly. Includes a visual color picker and WCAG contrast ratio checker.
Free Online Hash Generator
Generate MD5, SHA-1, SHA-256, and SHA-512 hashes instantly in your browser. No data leaves your device.
Free Online URL Encoder / Decoder
Encode and decode URLs, query strings, and Base64URL instantly. Handles special characters, Unicode, and percent-encoding.
Free Online Regex Tester
Test regular expressions in real time with match highlighting, capture groups, and a replace mode. Runs entirely in your browser.
QR Code Generator — WiFi, vCard, Instagram & More
Free QR code generator for URLs, WiFi, contacts, Instagram, WhatsApp and more — styled, high-res PNG & SVG, private. No signup, no tracking, no uploads.
Latest articles
View all articles- Gemini Token Counter Online: Tokens, Cost and AccuracyCount Gemini tokens in your browser, see how close the estimate gets to Google’s countTokens on 16 texts, and what a prompt costs on Gemini Pro and Flash.6 min read
- Prompt Caching Explained: The Cost Math for Claude and OpenAIHow prompt caching works on Claude and OpenAI, what cache writes and hits cost, and a worked example where it cuts a support bot’s bill by 82%.7 min read
- Claude API Pricing vs Subscription: Pro, Max and Ultra ComparedWhat your Claude habit would cost on the API, per message and per month, next to Pro, Max and Ultra. The math on Sonnet, Opus and Fable, with sources.6 min read
- DeepSeek Token Counter: Exact Counts, Prices and LimitsDeepSeek publishes its tokenizer, so DeepSeek V4 token counts can be exact in your browser. Measured against GPT-4o, plus prices and the 1M token limit.6 min read
- How Many Tokens Is a Word? Measured Across 14 LLMsA 1,000-word English text came to 1,151 tokens on GPT-4o and about 1,737 on Claude Opus 5.5. Tokens per word for 14 models, three languages and code.6 min read
- One Text, Five Tokenizers: LLM Token Counts ComparedWe ran one email, code and JSON through five LLM tokenizers. On GPT-4’s tokenizer the email is 139 tokens in English and 463 in Persian.6 min read
Frequently asked questions
Everything you need to know about ZipTools.
Yes, completely free with no limits, no premium tier, and no hidden fees. We sustain the site through non-intrusive advertising.
Absolutely. Every tool runs entirely in your browser using JavaScript and WebAssembly. Your text, images, and files are never uploaded to any server. You can verify this by using any tool while disconnected from the internet.
No. There is no signup, no login, and no account required. Just open a tool and start using it immediately.
Most online tools upload your data to their servers for processing. ZipTools processes everything locally in your browser — your data never leaves your device. This means better privacy, faster results, and no file size restrictions imposed by server limits.
ZipTools works in all modern browsers: Chrome 89+, Firefox 89+, Safari 15+, and Edge 89+. Some AI-powered tools (like Background Remover) require WebAssembly support, which is available in all browsers listed above.
Yes! All tools are fully responsive and work on phones and tablets. AI-powered tools may run slower on mobile due to limited processing power, but they still work.
Definitely. We are actively building new tools across categories — image editing, developer utilities, converters, and more. Check back regularly or follow our blog for updates.
ZipTools itself only uses localStorage to remember your theme preference (light/dark), your cookie consent choice and, on the Token Counter, whether Exact count is on. Google AdSense may set advertising cookies, which you can decline via our cookie consent banner. See our Privacy Policy for full details.