Free Web App · 100% Client-Side

Twelve Instagram tools,
zero uploads.

A free suite of twelve Instagram tools that runs entirely in the browser. No upload, no account, no watermark: your images never leave your device.

Open Grid Studio Watch the tool tutorials

Designed and built by João Queirós

Status Live · Free
Creator João Queirós
Runs on Any modern browser
Price Free, no account
Grid Studio with its twelve tool tabs and the seamless grid maker open
Two-minute tour

All twelve tools, in order.

A silent walkthrough recorded off the real page: every caption you see is on screen, and every result you see was produced live in the browser.

What "client-side" means here: every image is read, sliced, rendered and zipped by your own browser. There is no server to upload to, no account to create, and no watermark. The only network requests the page makes are for two open libraries and a cookieless visit counter.

At a glance

What is Grid Studio?

Grid Studio is a single self-contained web page holding twelve Instagram tools: seamless profile grids and panoramas, profile icons, Story highlight covers, Reels covers, no-crop resizing for five platforms, palette extraction, a text-to-carousel designer, caption and bio formatting that survives Instagram, a hashtag checker, an engagement calculator, and a QR generator. Every tool processes on the visitor's own device.

The Problem

What was broken.

Instagram quietly rebuilt its profile grid in early 2025: thumbnails became 3:4 portrait, and every carefully planned square grid started cropping in ways its owner never chose. Creators who want a seamless grid, a clean profile icon, or a matching set of highlight covers are pushed toward web tools that demand an upload, an account, a subscription, or a watermark, sometimes all four.

For a branding studio the deeper problem is trust. Asking a creator to upload their unreleased campaign images to a stranger's server, just to slice them into tiles, is a bad trade. The images are the asset; they should never need to leave the device.

The Approach

What was built.

Grid Studio answers with a single self-contained HTML page. All twelve tools run on the visitor's own machine: the browser reads the image, the canvas does the slicing, resizing, and rendering, and the ZIP is assembled locally. There is no backend, no login, and no watermark, because there is no server involved at all.

The tools encode real platform research, not guesses: grids export at Instagram\'s native 3:4 tile ratio (with an optional safe-edges method for 4:5 posts), captions and bios keep their blank lines using a character Instagram does not collapse, and the hashtag checker enforces the five-tag cap Instagram rolled out in December 2025. I built it as a portfolio piece and a lead generator for the studio: the tool is the proof, and the footer is the pitch.

The whole system

One page, no server.

01
Pick a tool
Twelve tabs in one responsive grid, each deep-linkable by URL hash so a specific tool can be shared directly. The tab registry drives the whole page; each tool is an isolated module that cannot break its neighbours.
02
Drop an image or type
Image tools accept drag and drop or a file picker and read the file straight into the browser. Text tools work on what you type: captions, bios, hashtags, slides, or the numbers for the engagement calculator.
03
Everything renders on-device
The canvas does the work: slicing a grid into numbered 3:4 tiles, flattening an icon to an opaque square the way Instagram requires, rendering a highlight cover pack in one shared style, or padding an image to any platform size without cropping.
04
Preview what Instagram will show
Grids preview both as the profile grid and as individual posts, icons preview inside a circular mask with safe-zone guides, and covers position against the current Reels and Story safe zones, so there are no surprises after posting.
05
Export and post
Single tools download a finished PNG; batch tools assemble a numbered ZIP in the browser, ordered so the first file is the first post. Nothing is stored anywhere except the visitor's own downloads folder.
Tool tutorials

Fifteen seconds per tool.

Each tool has its own short silent tutorial with on-screen steps. Open only the one you need; videos stay unloaded until you choose to play them.

Tool 01 Grid Maker: one image into a seamless 3:4 grid
Tool 02 Icon Maker: any image into a clean profile picture
Tool 03 Highlights: a matching Story highlight cover pack
Tool 04 Covers: Reels and Story covers inside the safe zones
Tool 05 Resize: pad to any platform size without cropping
Tool 06 Palette: pull the dominant colors from any image
Tool 07 Carousel: typed slides into numbered 1080x1350 images
Tool 08 Captions: keep the line breaks Instagram collapses
Tool 09 Hashtags: check sets against the five-tag cap
Tool 10 Bio: compose 150 characters with real line breaks
Tool 11 Engagement: honest rate math from your own numbers
Tool 12 QR Code: an on-brand static code that never expires
Stack

Built with.

Single-file HTML Vanilla JavaScript Canvas API JSZip qrcode-generator GoatCounter (cookieless)
Outcomes

What changed.

12 free tools in one page
0 uploads, accounts, or watermarks
100% of the processing on-device
1 self-contained HTML file

The single-file constraint is the product decision everything else follows from. Because the page has no backend, the privacy claim is architectural rather than promised: there is nowhere to upload an image to. It also makes the suite effortless to host, cache, and keep online for free, which is what lets every tool stay free with no account. Analytics are cookieless page counts only, so the page needs no consent banner.

Free · No account

Your images
stay yours.

Open Grid Studio and try any of the twelve tools right now. Nothing to install, nothing to sign up for, and nothing you make passes through a server.