PDF Tools

PDF Tools

Organise, number, watermark, split and compress your PDFs — free and private, all in your browser. Nothing is uploaded.

Drop a PDF here, or click to choose

Drop PDFs here to combine, or click to choose

PDF Converters

PDF Converter + Combine

Combine PDFs, turn images into a PDF, or turn a PDF's pages into images — all in your browser.

Engineering Calculators

Injection-mould design & FE-exam calculators — free, in your browser.

Open →
Drop images here or click to choose
JPG, PNG, WEBP, GIF — combined into one PDF, one image per page, in the order below.
Image Tools

Image Tools

Convert, compress and resize images — all in your browser. Files never leave your device.

Drop images here or click to choose
Convert JPG / PNG / WEBP / GIF to another format.
Convert to:
PDF Editor

Edit & Sign PDFs

Open a PDF or start blank. Add text, draw, erase, drop in a signature — then save.

100%
Open a PDF or start blank
Write in English, Hebrew or Arabic, annotate, sign — then save.
Weekly Planner

Weekly Planner

Type into any time slot. Click the circle to mark done. Saves automatically to your account.

—
TaskDone
Export / print:
Settings

Settings

Manage your password, how the app looks, its language, and your offline backup.

Appearance

Choose a theme. Your choice syncs to your account.

Language

The whole app switches instantly.

Change password

You'll re-enter your current password to confirm.

Offline backup

Download all your data as a file, or restore it from one.

Welcome to Charitools

Free, private tools for everyday work — pick a category below to get started. Nothing is ever uploaded.

Files

Organise

Utilities

ProvenCad 3D Open the ProvenCad 3D CAD & drawing workspace. Open →
Spreadsheet

Spreadsheet / CSV Editor

Open a CSV or Excel file, edit it in a grid, get instant sums, and export it again — free and in your browser. Nothing is uploaded.

Tasks Board

Tasks Board

Organise your work on a kanban board. Add cards, set priority and due dates, and drag them between columns. Saves to your account.

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Projects Database

Projects Database

Build your own database for anything — projects, clients, inventory, assets. Add your own columns, choose their type, and edit rows inline. Saves to your account.

No databases yet

Create your first database and add the columns you need.

Ranking

Points Ranking

See how you stack up. Earn points across the tools to climb the leaderboard. Only people who joined the points program appear here.

QR Code

QR Code Generator

Create QR codes for links, plain text, email, phone or Wi-Fi — free and private, made right in your browser.

WhatsApp Link

WhatsApp Link Creator

Turn a phone number and a message into a click-to-chat wa.me link — share it, copy it, or download a QR code. Free, in your browser.

Unit Converter

Unit Converter

Convert between units by category — length, area, volume, mass, force, pressure, energy, power, torque, speed, temperature and more.

All units
Focus Timer

Focus Timer

A Pomodoro timer: focus, then break. It rings and notifies you when the session ends.

25:00
Ready
Work Hours

Work Hours

Keep a log of the days and hours you work, so you can remember them and export the list. It exports in the app's current language.

DateDay StartEnd Break (min)Hours Notes
Total0.00
Export / print:

Signatures

Tap a saved signature to place it on the page, or draw a new one below.

Saved signatures
Draw a new one

Working as a guest

Your work is saved on this device only. Sign in to keep it safe and reach it from anywhere.