GitSize

Free Social Media Image Resizer — Resize Photos for Every Platform Instantly

Gitsize is a free browser-based image resizer for social media. Resize photos to the exact pixel dimensions required by Instagram, Facebook, Twitter/X, LinkedIn, Pinterest, TikTok, and YouTube — without uploading your files to any server. Your images stay private.

2026 SpecsLast Updated: June 2026
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Step 1  ·  Upload

Drop your image here

JPG · PNG · WEBP · HEIC — processed locally

Step 2  ·  Choose platforms

Free: up to 2 platforms · Need more? View pricing →

Social

Ads

Logos & Branding

Crop mode

Fill crops to exact size · Fit pads to preserve full image

Format

PNG for logos · JPG for photos · WEBP for web

Step 3  ·  Download

2 free exports remaining today

Live preview

Your preview will appear here

1080 × 1080 px
01

Upload anything

Drop a JPG, PNG, WEBP or HEIC. Stays on your device.

02

Pick your platform

Choose one preset — or many. We resize them all at once.

03

Download instantly

One file, or a tidy ZIP, named for every platform.

2026 image sizes by platform

Full reference guides updated for 2026, with every dimension, format, and pro tip you need.

All platforms sizes →Instagram sizes →LinkedIn sizes →YouTube sizes →Facebook sizes →TikTok sizes →

Works with every platform you use

Instagram
TikTok
Facebook
LinkedIn
Pinterest
YouTube
Twitter/X
Meta Feed
Meta Story
Meta
Google Display Leaderboard
Google Display Rectangle
Website Favicon
Website Logo
App Icon
Email

The browser-based image resizer for every platform

Gitsize is built for creators, marketers, indie devs, and small teams who need pixel-perfect images for Instagram, TikTok, Meta Ads, LinkedIn, YouTube, Pinterest, and dozens of other platforms. Upload a JPG, PNG, WEBP, or HEIC file and Gitsize instantly resizes it to the exact dimensions each platform requires — no design tool, no account, no learning curve.

Every resize happens locally in your browser using the Canvas API, which means your images never leave your device. Pick one platform preset or batch dozens at once, choose fill-and-crop or fit-with-padding, then download a single file or a tidy ZIP. The name's a play on git your size — built by someone who hates re-exporting the same hero shot eight different ways.

Frequently asked questions

What is the best free image resizer for social media?+
Gitsize is a free browser-based social media image resizer that handles every major platform — Instagram, Facebook, LinkedIn, Twitter/X, Pinterest, TikTok, YouTube, and more — without uploading your files to any server. There's no signup, no watermarks, and no quality loss from server round-trips.
What size should an Instagram post be in 2026?+
Instagram square posts are 1080×1080 pixels. Portrait posts (the highest-reach feed format) are 1080×1350. Landscape posts are 1080×566. Stories and Reels are 1080×1920.
Does Gitsize upload my photos to a server?+
No. Gitsize is privacy-first — every resize happens locally in your browser using the Canvas API. Your images never leave your device, which means nothing is logged, stored, or transmitted to us or any third party.
What is the ideal LinkedIn profile photo size?+
Upload your LinkedIn profile photo as a 400×400 pixel square (PNG or JPG, under 8 MB). LinkedIn crops it into a circle, so center your face and leave breathing room around the edges.
What size is a YouTube thumbnail?+
YouTube thumbnails are 1280×720 pixels (16:9 aspect ratio) and must be under 2 MB. JPG is recommended for photographic thumbnails; PNG for thumbnails with sharp text overlays.
How do I resize an image without losing quality?+
Start from the highest-resolution version of your photo, downscale to the target dimension in one step (never upscale), and export as JPG at quality 85 or as PNG for graphics with text. Gitsize uses your browser's Canvas API to do this without re-encoding through a server.
What format should social media images be — JPG or PNG?+
Use JPG for photos (smaller file sizes, faster uploads). Use PNG when you need transparency or when sharp text and logos must stay crisp. WEBP is supported by every major platform in 2026 and produces the smallest files at equal quality.
What is the correct size for a Facebook cover photo?+
Facebook cover photos display at 851×315 pixels on desktop and crop to roughly 640×360 on mobile. Upload at the desktop size and keep important content in the center safe zone so it survives the mobile crop.

Level up your content creation setup

Tools we recommend for creators. Some links are affiliate links — they help keep Gitsize free.

Design beyond resizing — Canva

Templates, brand kits, and full design tools when a resize isn't enough. Free tier available.

Try Canva →

Adobe Express

Quick-edit alternative from Adobe with smart templates for every social platform.

Try Adobe Express →

Ring light for creators

Even, flattering light for selfies, talking-head video, and product shots.

Shop ring lights →

Phone tripod & camera accessories

Stable shots, better angles, fewer reshoots. Pair with any phone.

Shop creator gear →

Contact

Questions, feedback, or feature requests? Send a note.