Browser-first tool directory

Free browser toolsfor images, data and creators

A focused collection of lightweight tools that run in your browser. Compress images, convert files, generate QR codes, format data and create shareable assets without installing anything.

Image tools

Compress, convert and resize images for uploads, product listings, forms and social media.

ImageImage compressorUpload an image, choose a target file size and download a smaller JPG. Useful for forms, applications, ecommerce uploads and social media images.ImageImage converterChoose an iPhone HEIC photo or a JPG, PNG or WebP image and convert it in your browser. Useful for uploads, publishing and quick format fixes.ImageImage resizerEnter the target width and height, choose how the image should fit, and download a resized JPG for avatars, product listings and upload requirements.ImageBatch image compressorSelect multiple images, choose a target file size and download compressed JPG files one by one. Useful for product photos, documents and social media batches.ImageEXIF viewerUpload a photo to inspect EXIF metadata such as camera model, date, lens and GPS fields, then download a clean JPG with metadata removed.ImageImage watermarkUpload an image, add your brand or handle as a text watermark, adjust placement and opacity, then download the result.

Data and creator tools

Small utilities for developers, operators and creators who need quick browser-based helpers.

CreatorQR code generatorEnter a URL or text, choose foreground and background colors, then download a PNG QR code for print, campaigns, menus and social profiles.CreatorSocial card makerCreate a clean 1200x630 social sharing image from a title, subtitle and accent color. Useful for blog posts, product updates and launch notes.CreatorCSS gradient generatorCreate a custom linear CSS gradient from presets, random colors or your own palette. Preview it live, copy the CSS code with one click or download a PNG for websites, cards and banners. No signup required.FilesFolder to ZIPCreate ZIP files from folders or multiple files directly in your browser. Choose a compression level, keep folder structure and download the ZIP without uploading files.DataCSV to JSON converterPaste CSV with a header row and convert it into formatted JSON. Useful for API testing, import preparation, data cleanup and front-end mock data.DataJSON Formatter & ValidatorPaste your JSON to format, validate and minify instantly. Runs in your browser — nothing is sent to a server.DataMarkdown to PDFPaste Markdown, preview the formatted result and use your browser print dialog to save it as PDF for notes, drafts and lightweight documents.PDFPDF UnlockerRemove copy, print and edit restrictions from PDF files instantly. Everything runs locally — your file never leaves your device.VideoM3U8 PlayerPaste any M3U8 URL and play it directly in your browser. No software needed, no uploads.

Why this site is simple

Low-cost utility sites work best when each page solves one job clearly.

Focused pages

Every tool page targets one search intent instead of mixing unrelated tools into the same content.

Browser local

Most tools run in the browser, keeping server cost low and making the experience fast for small files.

Internal links

The homepage links to every tool page so search engines and users can discover the full toolkit.

FAQ

Is OnlineBox free?

Yes. The current tools are free to use, including batch image compression. Advanced templates or heavier workflows may be added later, but the core browser tools stay easy to try.

Do files upload to a server?

Most tools are designed to run locally in your browser. The server mainly delivers the page.

Why are tools on separate pages?

Separate pages are better for users and search engines because each page can focus on one task, one title and one set of instructions.