Skip to content
Spellkit
49 free tools · no sign-up

Every tool you need, in one place

Fast, private, free. Most tools run entirely in your browser — your files never leave your device.

Browse all tools

Everyday Essentials

URL Shortener

Turn long links into short, clean URLs — with auto OG preview cards.

Open

JSON Formatter & Viewer

Pretty-print, validate, and explore JSON as a tree. All in your browser.

Open

Timestamp Converter

Convert Unix timestamps ↔ dates both ways. Milliseconds and timezones supported.

Open

Image Core

Image Splitter & Cropper

Split an image into a grid or crop a region, then download as ZIP. No upload, fully private.

Open

Batch Resize & Watermark

Resize many images at once and add watermarks.

Open

Background Remover

Remove image backgrounds automatically with AI.

Open

Image Compressor

Shrink image file size without losing quality.

Open

Image Converter

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

Open

Photo Merger

Merge multiple photos into one.

Open

Text Overlay

Add text and captions over images.

Open

JPG to PNG

Convert JPG to PNG instantly.

Open

HEIC to JPG

Convert iPhone HEIC photos to JPG/PNG — in your browser.

Open

Remove White Background

Make white backgrounds transparent.

Open

Compress Image to 100KB

Compress any image to under 100KB precisely.

Open

Layout & Social

Combine 2 Photos Side by Side

Place two photos next to each other.

Open

Instagram Grid Splitter

Split an image into an Instagram 3x3 grid.

Open

Design Editor

A simple graphic design editor.

Open

Page Builder

Build landing pages without code.

Open

Link Generator

Generate UTM, deep links and more.

Open

QR Code Generator

Turn URLs and text into QR codes.

Open

App Icon Generator

Generate iOS & Android app icon sets.

Open

Color Palette

Extract colors from images and build palettes.

Open

YouTube Thumbnail Downloader

Download YouTube thumbnails in HD.

Open

YouTube Comment Picker

Pick random winners from YouTube comments.

Open

Media & Document

GIF Tools

Make, edit and optimize GIFs.

Open

Video Converter

Convert between video formats.

Open

Video Editor

Trim and edit video in your browser.

Open

Audio Converter

Convert between audio formats.

Open

Audio Size Reducer

Compress audio file size.

Open

Screen Recorder

Record your screen from the browser.

Open

PDF to Image

Convert each PDF page to a PNG/JPG image — in your browser.

Open

Merge & Split PDF

Combine PDFs or extract specific pages (not text editing).

Open

Survey Maker

Create surveys & forms fast with Google Forms.

Open

Maker & Dev

Sprite Generator

Generate sprite sheets for games.

Open

Sprite Analyzer

Analyze and slice sprite sheets.

Open

Bitmap Font Generator

Generate bitmap fonts for games.

Open

Pixel Sound Generator

Generate retro 8-bit sound effects.

Open

Seamless Texture

Generate tileable seamless textures.

Open

Developer Calculator

Base conversion and bitwise calculator.

Open

JS Bundler

Bundle JavaScript in the browser.

Open

Markdown Viewer

Paste or open Markdown (.md) and see it rendered instantly.

Open

Markdown Editor

Write Markdown with live preview; export to .md or HTML.

Open

Guide Hub

Guides and how-tos for every tool.

Open

Korea Tools

Character & Byte Counter

Count characters, words, and UTF-8 / EUC-KR bytes in real time.

Open

Korean IME Fixer (한영타)

Fix text typed in the wrong keyboard layout (e.g. dkssud → 안녕).

Open

Korean Age Calculator

Calculate your international (만) age and year age from your birth date.

Open

Pyeong ↔ m² Converter

Convert between Korean pyeong (평) and square meters.

Open

Net Salary Calculator (KR)

Estimate monthly take-home pay after Korean insurance & tax.

Open

Meeting Point Finder

Find the fairest subway station to meet at by transit time — up to 10 people (Korea).

Open