Browser only • Social media formats • No upload

SocialSize Studio

Create ready-to-post images for Instagram, Facebook, YouTube and LinkedIn with smart background fill, safe areas, text and logo overlays.

Single file: index.php

Everything runs locally in your browser

Settings

Main image

JPG, PNG or WEBP. Nothing is uploaded or stored.

App / Platform

Canvas type

Composition mode

Download format

JPG quality

92%

Image framing

Zoom 100%

Background tools

Palette colours

Upload an image to extract colours.

Custom colour

HEX

Blur strength 30px

Text overlay

Enable text overlay

Text

Font

Weight

Colour

Align

Size

Position X 50%

Position Y 86%

Add background box behind text

Box colour

Box opacity 45%

Logo / watermark

Logo image

PNG with transparency works best.

Enable logo overlay

Position

Opacity 100%

Size 18%

Margin 4%

Overlay guides

Show rule-of-thirds guides

Show safe area when available

Choose an image to start.

Editor

Preset: Instagram Post — Square

Drag to reposition the image. Use the mouse wheel or the zoom slider to scale it. Overlays are not included in the download.

Preview: no image yet.

Canvas size: 1080 × 1080

Live preview

Upload an image to start editing.

Safe area will appear automatically for presets that need it.