Prime Webkit brings common file, text, developer, calculator, and career tasks into one focused collection of browser tools. Use an image compressor before sending a large photo, compare drafts line by line, convert a timestamp while debugging an API, or create a polished cover letter when an application is due. Most tools run locally in your browser, so there is no account to create and no software to install. Each page explains what the tool does, shows the relevant controls, and links to useful alternatives when another format or workflow is a better fit. The goal is simple: a fast answer and a usable download, without making you navigate a maze of unrelated pages.

The toolkit

58+ free tools, no sign-up

Everything runs in your browser — your files never touch a server. Search or filter to find what you need.

Image

Resize, convert, and compress — no upload to a server.

Image Compressor

Shrink JPG, PNG & WebP without visible quality loss.

Image Resizer

Resize by pixels or percentage, keep the aspect ratio.

Image Converter

Convert between JPG, PNG, and WebP instantly.

HEIC to JPG / PNG

Convert iPhone photos to JPG or PNG in seconds.

WebP to JPG / PNG

Turn WebP images into JPG or PNG without losing control.

Image Cropper

Crop to a ratio or freeform with a draggable frame.

Background Remover

Erase a solid background and export a transparent PNG.

Favicon Generator

Turn any image into a full favicon set.

Color Picker & Palette Generator

Pick colours, build palettes, and pull HEX from images.

Watermark Adder

Stamp text or a logo watermark onto your images.

PDF

Merge, convert, and shrink documents in your browser.

PDF Compressor

Reduce PDF file size for email and uploads.

PDF to Word

Convert a PDF into an editable Word (.docx) document.

Word to PDF

Convert a Word (.docx) file into a polished PDF.

JPG to PDF

Combine JPG & PNG images into a single PDF.

PDF Merger

Combine multiple PDFs into one file, in order.

PDF Splitter

Extract pages or split a PDF into separate files.

PDF to JPG

Export every PDF page as a JPG or PNG image.

PDF to PowerPoint

Turn PDF pages into presentation slides as clean images.

PDF Page Rotator

Fix sideways or upside-down pages and save.

Unlock PDF

Remove restrictions from a PDF you own.

Career & Business

CVs, invoices, QR codes, and the paperwork of getting hired and paid.

CV Builder

Fill in a form, get a clean, ATS-friendly CV — free.

Invoice Generator

Create a clean, numbered invoice and export a PDF.

Cover Letter Generator

Draft a tailored cover letter from a few inputs.

Barcode Generator

Create scannable Code 128, EAN, UPC & more.

Signature Generator

Draw or type your signature, download a PNG.

Business Name Generator

Brainstorm brandable names from your keywords.

QR Code Generator

Make QR codes for links, Wi-Fi, email, and contacts.

Calculators

Fast, accurate everyday calculators — dates, percentages, and more.

Age Calculator

Work out an exact age in years, months, and days.

Percentage Calculator

Percentages, increases, decreases, and shares — solved.

Time & Hours Calculator

Measure shifts, breaks, and time additions in one place.

Unit Converter

Convert length, weight, temperature, and more.

Loan / EMI Calculator

Monthly payment, total interest & full amortisation.

Compound Interest Calculator

Model growth with contributions, compounding, and forecasts.

Paycheck Calculator

Estimate take-home pay by pay period and state.

VAT Calculator

Convert net and gross totals with a selected VAT rate.

Retirement Calculator

Forecast retirement savings growth from your current situation.

Text

Count, clean, case-convert, and format text fast.

Image to Text (OCR)

Extract text from JPG, PNG, and WebP images.

Word Counter

Live word, character, sentence & reading-time counts.

Case Converter

UPPER, lower, Title, Sentence, camelCase & more.

Text to Speech

Turn text into natural speech and listen instantly.

Lorem Ipsum Generator

Placeholder text by words, sentences, or paragraphs.

Remove Line Breaks

Strip or normalise line breaks and spacing.

Text Diff Checker

Compare two texts and highlight changes.

Slug Generator

Turn a title into a clean URL slug.

Developer

Encode, format, and generate the things devs reach for daily.

Password Generator

Create strong, random passwords with a strength meter.

CSV to JSON / JSON to CSV

Convert structured data between CSV and JSON in a browser.

XML Formatter & Validator

Pretty-print, minify, and validate XML safely in-browser.

SEO Meta Tag Generator

Draft titles, descriptions, OG tags, and canonical metadata fast.

Schema Markup Generator

Create valid JSON-LD for products, articles, business pages, and more.

JSON Formatter

Beautify, minify, and validate JSON instantly.

Base64 Encode / Decode

Encode and decode Base64 text, with full Unicode.

URL Encoder / Decoder

Percent-encode and decode URLs safely.

UUID Generator

Generate secure v4 UUIDs in bulk.

Hash Generator

SHA-1, SHA-256, SHA-384 & SHA-512 from text.

JWT Decoder

Inspect the header and payload of a JWT.

Regex Tester

Test regular expressions against live text.

IBAN Validator

Check bank account numbers and optional BIC format.

Timestamp Converter

Unix epoch to human dates, and back.

Frequently asked questions

Are the online tools free?

Yes. Prime Webkit's tools are free to use without an account or watermark.

Do you upload my files?

No. The image, PDF, text, and calculator tools process work in your browser whenever the tool supports local processing.

Which tool should I use to compare documents?

Use the Text Difference Checker to compare two versions line by line and review additions and removals.

Can I use the tools on a phone?

Yes. The tools are designed to work in modern mobile and desktop browsers, though large files may need more device memory.

Do I need to install anything?

No. Open a tool in your browser, provide the input it requests, and download the result when it is ready.