Free PDF, Image, Calculator
and Web Tools
Merge PDFs, compress images, calculate GST, create documents, and check websites — with practical tools that work without an account.
- No Signup
Required - Free to
Use - No Install
Needed - Ad-supported,
tools stay free
Search once, match the exact job.
- FIND
- RUN
- RESULT
The search bar above finds tools by name and category, so typing "GST" or "merge" jumps straight to the right one instead of scrolling categories.
300+ free tools across
12 categories
Built and maintained by Bhavin J. Sheth·Last modified: September 03, 2026
Everyday file, GST and site jobs — in one catalog, no account
Related jobs sit together: merge a PDF, compress it, then add GST on the invoice — same category, same page style, no relearning a new tool each time. File tools that run on-device process your files in the browser rather than uploading them to our server. SSL, DNS and status checks are the exception — they contact only the host you type in, because that's how a real DNS or SSL lookup has to work.
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Related tools, one catalog.
Convert an image, then compress it before you upload — both live in the Image category instead of two separate websites.
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Built for Indian business paperwork.
GST splitting, construction-cost estimates, and invoice/receipt generators follow common Indian formats out of the box.
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The catalog keeps growing.
New tools are added to existing categories as they're built, so a related task stays a click away instead of a separate search.
Find the Right Tool for the Job
12 categories covering PDFs, images, calculations, documents, SEO, and web tasks.
Pick a category and open a tool.
DNS, SSL, uptime, HTTP headers and robots.txt checks — these tools contact the host you enter, since a real lookup has to reach the actual server to answer.
View all Web & Tech ToolsGST, EMI, BMI, age and CGPA — the everyday Indian tax and loan math people usually reach for a spreadsheet to do.
View all Calculation ToolsMerge, split, compress, crop and convert PDFs. Most of these process the file in your browser tab rather than on a remote server.
View all PDF ToolsCompress, convert, crop, resize and clean up images. Background removal and sketch conversion sit here too, alongside the basics.
View all Image ToolsWord count, case conversion, grammar checks, and text-to-speech — the small edits that come up while drafting.
View all Text ToolsKeyword density, meta tags, backlinks and on-page basics for checking a page before or after you publish it.
View all SEO ToolsUnit, currency, number-to-words and file-format conversions in one place.
View all Conversion ToolsHashtags, bios, titles and post drafts for YouTube, Instagram, LinkedIn and Twitter/X.
View all Social Media ToolsPassword generation, Base64/URL encoding, hashing and basic SSL checks — small utilities developers reach for often.
View all Security ToolsInvoices, proforma invoices, receipts, purchase orders and salary slips — filled in and downloaded as a PDF.
View all Invoice ToolsClassic browser games — Tic Tac Toe, Snake, 2048, Sudoku, Chess and more — for a short break.
View all GamesRough-order estimates for house construction, labour, paint, brick, cement and steel — a starting point before you get a formal quote.
View all Construction ToolsNo account. Output on the same page.
Three steps, no login screen in between.
- 01
Find the tool
Search by name, or open a category and scan the tags for the exact task.
- 02
Run it
Enter your input or upload a file. The tool page itself explains any size or format limit before you start.
- 03
Get your result
Copy, save or download the output directly from the tool page — no separate export step.
What actually makes a tool "free" here
Three specific things, not a slogan.
Ad-supported, not paywalled
There's no premium tier, usage cap, or "sign up to download" step behind any tool. Running costs are covered through display ads placed around the tool, not on the input or download button.
No dark patterns
No forced newsletter pop-ups, fake countdown timers, or "only 2 left" urgency banners — the kind of pressure tactics common on ad-supported tool sites. Use the tool, get the result, leave.
Built by one person, not a support queue
Issues get looked at directly by the person credited in the footer — Bhavin J. Sheth — instead of routed through a ticket system. The trade-off: updates roll out to tools one at a time, not all at once.
What Do You Want to Do?
Match the job to a tool.
| What You Want to Do | Tool to Use | What You'll Get | Best For |
|---|---|---|---|
| Add a QR code to an invoice | QR Code Generator → | PNG/SVG QR you can paste on an invoice, menu or poster | Invoices, menus, shop posters |
| Split GST on a service invoice | GST Calculator → | GST amount and the invoice total | Indian GST invoices |
| Merge a resume and certificates into one PDF | Merge PDF → | One combined PDF file for easy sharing or uploading | Job applications & tenders |
| Compress product images for a website | Image Compressor → | Smaller images with a balance of size and quality | Website & WhatsApp media limits |
| Create an invoice for a client | Invoice Generator → | A formatted invoice ready to download or share | Freelancers & small agencies |
| Check whether a server is offline or online | Server Status Checker → | Website reachability and response-time details | Website availability & response checks |
| Generate a strong password for a new account | Password Generator → | A randomly generated password using the options you choose | New accounts & admin panels |
| Reduce a PDF before sending it on WhatsApp | PDF Compressor → | A smaller PDF that's easier to share on WhatsApp or email | WhatsApp & email attachments |
Straight answers
Files, GST, ads, and what stays in your browser.
300+ free tools across 12 categories — PDF and image files, calculators, invoices, text, SEO and web checks. No account needed.
Related tools sit in the same category instead of being spread across separate single-purpose sites, and there's no sign-up wall between you and the tool.
No. AllInOneTools is designed so you can use the tools without creating an account or signing in.
Yes. Tools on this site are free to run without an account. The site is ad-supported.
Yes. Layouts adapt to phones. Heavy PDF or image jobs still work best on a desktop because they use your device memory.
Many PDF, image, and calculator tools process work directly in your browser. Network-based tools — SSL checker, DNS lookup, server status, URL shortener, and some SEO checks — need network access to contact the site or server you enter.
Many PDF and image tools process files locally in your browser. Network-based tools, such as SSL, DNS, server-status, URL-shortening, and some SEO checks, make the network requests required for their specific task. See our Privacy Policy.
On-device tools don't use one fixed upload limit — the practical limit depends on your browser and device memory. Some tools also show a specific size cap on the tool page itself.
Yes. Advertising helps keep the tools free to use. Ads are placed separately from the tool's input fields and results.
No. Estimators and calculators are indicative only — for contracts, taxation, or legal decisions, confirm with a qualified professional.
Technical Guides
Written by the same person who builds the tools — how the browser-based utilities actually work under the hood.
How to Build Browser-Based PDF Tools
Implementation write-ups for the merge, split and compression logic behind the PDF tools on this site, published on freeCodeCamp.
Website & Technology Guides
Notes on DNS, IP addresses, and indexing checks — the same checks the Web & Tech Tools category runs, explained in more depth.
Browser-Based Image Processing
How browser-based compression, resizing and cropping can process images locally — including techniques used by tools in the Image category.
300+ tools, one search bar away.
Type what you're trying to do — merge, GST, compress, DNS — and the search above matches it to the right tool.
- No Signup
Required - Free to
Use - On-device PDF
& image tools
Type it. Find it. Use it.