Useful tools. Free.
Invoices, VAT, QR codes, website audits, and more. No sign-up, right in your browser. Most tools never send your data anywhere.
Business and invoicing
Free online invoice generator
Fill it in and download a PDF, with a QR payment code and company details loaded from ARES or the Slovak register.
Open toolVAT calculator
Work out prices with and without VAT at Czech rates (21%, 12%, 0%) or Slovak rates (23%, 19%, 5%).
Open toolNet salary calculator 2026
Converts gross salary to net and back, with tax credits, children, and employer costs, for the Czech Republic and Slovakia.
Open toolWebsite cost calculator
Pick what you need and see a ballpark price and timeline right away.
Open toolEmail signature generator
A professional signature for Gmail, Outlook, and Apple Mail. Fill it in and copy it.
Open toolCompany lookup
Name, registered address, VAT ID, and status of any Czech or Slovak company. You can search by name, too.
Open toolSelf-employed tax and contributions calculator 2026
Tax, social security, health insurance, and new monthly advances for the self-employed in the Czech Republic and Slovakia, plus a flat-tax comparison.
Open toolWorking days calculator
Working days between dates, invoice due dates, and public holidays in the Czech Republic and Slovakia.
Open toolPercentage calculator
X% of a number, percentage change, discounts, and original prices.
Open toolPDFs and images
Merge PDF
Combine multiple PDFs into one file. Choose the order and which pages to include.
Open toolSplit PDF
Into single pages, every few pages, or by custom ranges.
Open toolEdit PDF pages
Rotate, reorder, and delete pages. Add page numbers and a watermark.
Open toolCompress PDF
Smaller PDFs for email, a Czech data box, or a Slovak e-box. Four compression levels.
Open toolJPG to PDF
Photos and images in one PDF, in A4 or sized to fit each image.
Open toolPDF to JPG
PDF pages as JPG or PNG images at up to 300 DPI.
Open toolHEIC to JPG converter
Convert iPhone photos to JPG, PNG, or WebP in bulk, without uploading them.
Open toolWeb and SEO
Domain name checker
Is your domain available? Check .cz, .com, .eu, and more at once, with WHOIS details for taken ones.
Open toolCharacter and word counter
Characters, words, standard pages, and limits for meta descriptions, X, SMS, and Instagram.
Open toolFavicon generator
Create favicon.ico, iPhone and Android icons, and the code for your website from a logo or letters.
Open toolWebsite audit and speed test
Enter a URL, and within a minute you'll know how fast your site is, how it stacks up on SEO, and what to fix.
Open toolSearch preview
See how your page looks in search results and when shared, with title and description length checks.
Open toolImage compressor
Shrink photos and convert them to WebP, right in your browser. Nothing is uploaded.
Open toolColor contrast checker
Check whether your text has enough contrast to be readable under WCAG 2.2.
Open toolMarketing and security
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