Payas Web Kit · Viewer

Payas Imager

A fully client-side image viewer supporting 11 formats including HEIC. Zoom, pan, rotate, flip, and present images — all without leaving your browser.

Open Imager Docs

id::payas-imager · stable

KitPayas Web Kit

PlatformBrowser · Web

Formats11 (incl. HEIC)

HEICheic2any · in-browser

ExportDownload · Clipboard · Print

ThemesLight · Dark

LicenseMIT

Open App

Formats

JPEG PNG GIF BMP TIFF WebP SVG ICO AVIF HEIC HEIF

HEIC/HEIF

In-browser

No server upload

Slideshow

Fullscreen

Fade · Slide · None

Transforms

Rotate · Flip H/V

features

What Payas Imager does

11 image formats

JPEG, PNG, GIF (animated), BMP, TIFF, WebP, SVG, ICO, AVIF, HEIC, and HEIF — natively or via in-browser conversion.

HEIC conversion

iPhone HEIC/HEIF photos are converted to JPEG entirely in the browser using heic2any — no file is uploaded to any server.

Zoom & pan

Mouse-wheel zoom centred on cursor, click-drag panning, fit-to-window, 100%, 200% shortcuts. Configurable zoom sensitivity and smooth animation.

Non-destructive transforms

Rotate 90° left/right, flip horizontal/vertical — applied as CSS transforms. Original file is never modified. State persists per image in the session.

Fullscreen slideshow

Presentation mode with thumbnail strip, play/pause, configurable interval (2–10 s), transition effects (Fade, Slide, None), and progress bar.

Export & share

Download the original file, copy to clipboard via Canvas API, or send to the browser print dialog. HEIC exports as JPEG.

technical · details

Technical details

Entry point	`payas-imager.html` — single HTML file
Stack	HTML5 · CSS3 · Vanilla JavaScript ES2022
Dependencies	Bootstrap 5.3.3 · Font Awesome 6.5.2 · heic2any 0.0.4 · Google Fonts
Storage	`localStorage` — theme and settings only. Images are not persisted.
Supported formats	JPEG · PNG · GIF · BMP · TIFF · WebP · SVG · ICO · AVIF · HEIC · HEIF
Canvas background	Checkerboard · White · Black · Grey · Dark (configurable)
Image rendering	Auto · Crisp Edges · Pixelated · Smooth (configurable)
Developer	Saman Wijesinghe
License	MIT