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Instant, privacy-first browser utilities for image processing, PDF manipulation, developer tasks, text transformations, calculators, and converters.

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Find the right utility for your workflow across 14 specialized categories

Image Tools
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PDF Tools
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Text Tools
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Developer Tools
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12 Tools
Calculators
10 Tools
Unit Converters
10 Tools
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11 Tools
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Most Popular Tools

The most frequently bookmarked tools by our users

Image Compressor

Compress JPG, PNG, and WebP images by up to 80% without losing quality.
Merge PDF

Combine multiple PDF files into one clean document instantly.
Word Counter

Count words, characters, sentences, paragraphs, and reading time in real time.
JSON Formatter

Format, validate, beautify, and minify raw JSON string inputs.
Password Generator

Generate secure, cryptographically random passwords with custom symbols.
QR Code Generator

Create custom QR codes for URLs, text, Wi-Fi, and contact details.
JPG to PDF

Convert JPG and PNG images into a clean single PDF file.
Case Converter

Convert text to UPPERCASE, lowercase, Title Case, camelCase, and snake_case.
Base64 Encoder

Encode text or images into standard Base64 format strings.
Percentage Calculator

Calculate percentage of values, percentage differences, and changes easily.
Color Picker

Pick colors from screen or image and export HEX, RGB, and HSL formats.
SERP Preview Tool

Simulate how your meta title and description appear in Google search results.

Why Choose TinyToolzz?

Built from the ground up for radical speed, privacy, and simplicity

Privacy First
Your files never leave your device. All processing occurs 100% locally in your web browser.
Lightning Fast
No server uploads or queues. Execution starts instantly and returns results in milliseconds.
Truly Free
No subscription tiers, daily task limits, or hidden paywalls. 100% free forever for everyone.
Works on Any Device
Fully optimized for smartphones, tablets, laptops, and desktop viewports.
150+ Tools
A complete utility suite for images, PDFs, developer tasks, text, calculators, and converters.
No Dark Patterns
No artificial processing delays, fake progress bars, or deceptive sign-up pop-ups.

Frequently Asked Questions

Everything you need to know about using TinyToolzz

What is TinyToolzz?
TinyToolzz is a browser-based suite of online utilities for images, PDFs, text, developer code, calculators, and unit converters. Every tool runs directly inside your web browser.
Are all tools on TinyToolzz free?
Yes. All tools on TinyToolzz are 100% free with no premium plans, hidden subscriptions, or daily limits.
Do I need to create an account?
No. You never need to sign up, provide an email address, or log in to use any tool on TinyToolzz.
Is my data safe? Do files get uploaded to a server?
Your files and text inputs are completely private. All processing is performed client-side using JavaScript and Web APIs. Zero file data is ever transmitted to external servers.
Do the tools work on mobile devices?
Yes! TinyToolzz is designed mobile-first and works seamlessly across iOS Safari, Android Chrome, mobile browsers, tablets, and desktop computers.

Bookmark TinyToolzz for Later

Hundreds of browser-based online tools, always accessible, fast, and completely free.

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Robots.txt Generator

Write a clean robots.txt in seconds: add allow and disallow rows per crawler, set crawl-delay, list sitemaps. The file builds live as you type.

Paths must start with / and may use * and $ wildcards. Empty rows are ignored.

Honored by Bing and Yandex. Google ignores it.

Generated robots.txt

# Your robots.txt appears here - add a rule above
0
Valid rules
0
Crawler groups
0
Sitemaps
0
File lines

Technical Specifications

Exactly how the file is assembled and which rules apply.

Element Rule
Grouping Rows sharing a user-agent merge into one group, kept in first-use order
Path matching Prefixes match from the left; * matches any run, $ anchors the end; longest match wins
Path format Must start with / (or be a lone *); anything else is skipped with a warning
Crawl-delay Positive whole seconds, repeated under every crawler group in the file
Sitemap lines Absolute http(s) URLs only; relative lines are skipped, multiples allowed
File facts Save as robots.txt at the domain root; keep it under 500 KiB for Google
Processing location 100% client-side JavaScript in your browser memory; nothing is uploaded

Features

🤖

Per-Crawler Groups

Target Googlebot, Bingbot, image and social crawlers individually or all at once.

⚡

One-Click Presets

Allow All and Block All starter templates, plus a realistic shop sample.

📋

Copy or Download

Copy the file to the clipboard or save it as robots.txt, ready to upload.

🔒

Local Device Privacy

Everything runs in the page with plain JavaScript. Drafts never leave your device.

How to Use the Robots.txt Generator

  1. Click Add Rule for each path: pick the crawler, Allow or Disallow, and the path.
  2. Set an optional crawl-delay and list sitemap URLs, one per line.
  3. Watch the robots.txt preview and the rule counters update live.
  4. Click Copy File or Download robots.txt.
  5. Upload the file to the domain root (example.com/robots.txt) and test it in Search Console.

Blocking Crawls Without Breaking Indexing

Robots.txt controls crawling, not indexing. Blocking /admin/ or /cart/ saves crawl budget and keeps junk out of the crawl queue, which is exactly what the file is for. But a blocked page that other sites link to can still surface in results as a bare URL, since Google honors the block by never reading the page — including any removal signal on it.

Allow, Disallow and the longest match

Each rule is a path prefix: Disallow: /shop/ closes the whole section, while a paired Allow: /shop/sale/ reopens one corner. Where rules overlap, Google and Bing enforce the longest matching path, so order inside a group does not matter. Test the logic against your sitemap plan with the Sitemap XML Builder, and mark preferred page addresses with the Canonical Tag Generator.

Honest limitations

Robots.txt is advisory: well-behaved crawlers obey it, bad bots ignore it, and it offers zero access control — never rely on it to hide private content. Crawl-delay is ignored by Google, and files over 500 KiB may be cut short. Always verify the live file in Search Console after uploading.

Privacy and Client-Side Security

Privacy Guarantee: All file building occurs locally inside your browser. Your paths, agents and sitemap URLs are never transmitted, stored, or recorded on remote servers.

Many online generators send your drafts to a server for processing. TinyToolzz takes a different approach: every step runs in the page itself with plain JavaScript string operations.

Because nothing is uploaded, there is no waiting, no account, and no copy of your sitemap structure retained anywhere. Your rules exist only in the tab memory and are discarded when you close the page or click Clear.

Frequently Asked Questions

What is a robots.txt file and where does it live?
Robots.txt is a plain-text file at the root of a domain, such as example.com/robots.txt, that tells crawlers which paths they may fetch. Crawlers read it before anything else on the site, so keep it short, valid and under the 500 KiB size cap.
What is the difference between Allow and Disallow?
Disallow blocks crawling of every URL starting with the given path prefix, while Allow carves exceptions back out, for example blocking /shop/ but allowing /shop/sale/. When rules overlap, Google and Bing apply the longest matching path.
Does robots.txt remove pages from Google results?
No. A disallowed page can still appear in results as a URL-only listing when other pages link to it, because Google never crawled the noindex signal. To remove a page from the index, serve it with a noindex robots meta tag instead of blocking it.
What does Crawl-delay do?
Crawl-delay sets the minimum seconds a crawler waits between requests to the site, which protects small servers from overload. Bing and Yandex honor it; Google ignores it and expects crawl-rate tuning inside Search Console instead.
How do Sitemap lines work in robots.txt?
Each Sitemap line carries one absolute sitemap URL and may appear anywhere as a top-level line, so crawlers discover sitemaps without Search Console. Multiple sitemap lines are allowed; relative paths and non-URL text are ignored by crawlers.
Is my site data uploaded to a server?
No. All file building happens locally in your browser with JavaScript. Your paths, agents and sitemap URLs are never transmitted, stored or logged anywhere. Closing the tab or clicking Clear removes everything immediately.

Related SEO Tools

Sitemap XML Builder

Generate valid XML sitemaps for Search Console submission.
Canonical Tag Generator

Mark the preferred URL to avoid duplicate-content issues.
Meta Tag Generator

Build title, description and robots tags for search results.
SERP Preview Tool

See how titles and descriptions render in Google results.
Schema Markup Generator

Build JSON-LD structured data for rich search results.
Keyword Density Checker

Measure keyword frequency across 1, 2 and 3-word phrases.