Free Online Tools — The Complete Toolstik Toolbox

Toolstik offers 25 free online tools that run entirely in your browser: PDF tools, image tools, business calculators, an invoice generator, developer utilities, and SEO and writing tools. Find your task below and jump straight to the right tool. No sign-up is needed, and your files never leave your device.

Find a tool by task

If you know what you need to do but not which tool does it, start here.

PDF and document tools

PDFs are the default format for contracts, invoices, reports, and forms, and most everyday PDF jobs come down to five operations. Merge PDF joins documents in the order you set. The PDF Splitter saves every page separately, extracts a range such as 1-3,5, or builds several PDFs from groups of pages. The PDF Compressor rebuilds a file to remove overhead, and tells you honestly when a file is already as small as it can get. JPG to PDF and PDF to JPG convert in both directions.

Because processing happens in the browser, these tools suit confidential documents such as signed agreements or bank statements. For a deeper walkthrough, including when to compress and when to convert, read the best free PDF tools online and PDF compression vs conversion. Browse the whole group under documents.

Image tools

Images are usually the heaviest part of a web page and the most common reason an email bounces. The Image Compressor re-encodes JPG, PNG, and WebP files at the quality you choose, and can cap the width at the same time. The Image Resizer sets exact dimensions while keeping the aspect ratio. The Image Converter switches between WebP, JPG, and PNG. HEIC to JPG makes iPhone photos open on Windows, in older apps, and on upload forms that reject HEIC.

If you're unsure which format to use, JPG vs PNG vs WebP vs AVIF compares them side by side, and WebP vs JPEG focuses on the most common decision for websites. Mac users can follow how to convert HEIC to JPG on a Mac. The full overview is the best free image tools online, and every image tool is listed under images.

Business tools for freelancers and small shops

The business tools cover the numbers behind pricing and getting paid. The Invoice Generator builds a PDF invoice from your line items with a live preview. The Profit Margin Calculator and Markup Calculator answer two questions that are easy to mix up: what share of the price is profit, and how much did you add on top of cost. If that difference has ever tripped you up, read profit margin vs markup. The ROI Calculator measures what an investment returned, and the Discount Calculator handles stacked discounts correctly. A 25% discount followed by an extra 10% is 32.5% off in total, not 35%.

Start with free business tools for freelancers, or browse business.

Developer tools

The developer tools cover small debugging jobs, the kind where you'd otherwise paste something sensitive into a random website. The JSON Formatter pretty-prints, minifies, and pinpoints syntax errors (see common JSON errors and fixes). The JWT Decoder shows a token's header and payload without verifying it. Base64 and URL encoders handle the two encodings that appear in almost every API. The Unix Timestamp Converter turns values like 1700000000 into readable dates and back, and the Regex Tester highlights matches and capture groups, stopping runaway patterns before they freeze the tab.

Everything you paste stays in the browser, which matters when the data is a real token or a production payload. The free developer tools guide covers each tool, and JWT header, payload, and signature explained is a good primer if you work with authentication. See developer for the full list.

SEO and writing tools

Publishing a page well involves a series of small checks, and each SEO tool handles one. The Word Counter gives live word, character, and reading-time counts. The Case & Slug Converter turns a headline into a clean, hyphenated URL slug, or into Title Case, camelCase, or snake_case. The Meta Title & Description Checker previews how your page might look in search results and generates the HTML tags. The UTM Link Builder creates trackable campaign links for Google Analytics, and the Schema Markup Generator outputs JSON-LD for FAQ, Article, Organization, and Product pages.

Read free SEO and text tools for a pre-publish checklist that uses all five, or browse SEO and text.

Workflows that combine tools

Many real tasks take more than one tool. Here are a few common chains.

An email attachment is too large. Merge the documents with Merge PDF, then run the result through the PDF Compressor. Compress once, at the end. That way you check the final file size a single time, against the exact file you'll send.

You're publishing a blog post. Check length with the Word Counter, create the slug with the Case & Slug Converter, write the title and description in the Meta Title & Description Checker, shrink the images with the Image Compressor, and tag the newsletter link with the UTM Link Builder.

You're sending a quote and invoice. Use the Markup Calculator to price from your costs, confirm the margin with the Profit Margin Calculator, then create the PDF with the Invoice Generator.

You're debugging an API response. Format the body with the JSON Formatter, decode the auth token with the JWT Decoder, and convert its exp claim with the Unix Timestamp Converter to see when it expires.

You're sharing iPhone photos on a website. Convert them with HEIC to JPG, resize them with the Image Resizer, then compress or convert them to WebP for faster pages.

Why browser-based tools

Running tools in the browser has three practical benefits. First, privacy: files are processed on your device rather than uploaded, so there's no copy sitting on someone else's server. Second, speed: there's no upload or download wait, which matters most with large files on slow connections. Third, simplicity: there are no accounts, queues, or daily limits.

There are trade-offs too. Your device does the work, so very large PDFs or big photo batches are slower on older phones. Some advanced jobs, such as OCR, editing text inside a PDF, or professional photo retouching, still need desktop software. Each tool page lists its limits so you know before you start.

Where to go next

• New to Toolstik? Read Welcome to Toolstik.
• Want to browse? Open the tools directory or the blog.
• Prefer to explore by topic? Visit all categories.