⚙️ Nástrojárna Fast free tools, right in your browser. CZEN

Tools that just work

A set of handy online tools for PDFs, images and text. Everything runs right in your browser — no file uploads, no sign-up, free.

Image compression

Reduce the file size of a JPG, PNG or WebP image right in your browser.

Image format conversion

Convert an image between JPG, PNG and WebP right in your browser.

Resize image

Change an image's width and height right in your browser.

QR code generator

Create a QR code from a link or text and download it.

Merge PDF

Combine several PDF files into one right in your browser.

Split PDF (pick pages)

Pick specific pages from a PDF and download them as a new file.

Strong password generator

Create a strong random password right in your browser.

Character and word counter

Count characters, words, sentences and paragraphs in your text instantly and for free.

Lorem ipsum generator

Generate Lorem ipsum placeholder text with a chosen number of paragraphs.

Base64 — encode and decode

Encode or decode text to/from Base64.

Rotate PDF

Rotate all pages of a PDF by 90, 180 or 270 degrees and download.

Percentage calculator

Calculate percentages: what is X% of Y, X is what % of Y, percentage change.

UUID generator

Generate random version-4 UUIDs.

Color converter (HEX ↔ RGB)

Convert a color between HEX and RGB with a preview.

JSON formatter and validator

Format and validate JSON (pretty-print) right in your browser.

Time / Unix Timestamp Converter

Convert a Unix timestamp (seconds or milliseconds) to a readable date and back.

Word Frequency Counter

Count word frequency in any text free, right in your browser.

Slugify and Accent Remover

Free tool to turn text into a clean URL slug: lowercase, no accents, hyphens instead of spaces.

Password Strength

Check your password strength free in the browser.

Days Between Dates

Calculate the number of days and weeks between two dates for free.

Why Nástrojárna?