refern vs PureRef: Canvas Plus a Real Library (2026)

By refern | Last updated: June 2026

PureRef is free for personal use, beloved by concept artists, and genuinely excellent as an always-on-top reference overlay. refern keeps that canvas and overlay use case, then adds the searchable library, hierarchical tags, a relationship graph, and a browser extension that PureRef has never had. If you use PureRef as a session-scoped board and clear it after each project, PureRef may still be the right tool. If your reference collection has grown past a few hundred images and finding things later is painful, read on.

Quick verdict

What is refern?

refern is a desktop reference manager for artists that combines Eagle-style organization with a PureRef-style infinite canvas and an Obsidian-style relationship graph. It costs $30 one time, runs on Windows, macOS, and Linux, and does not copy your files.

refern is a local-first desktop app. A workspace is a normal folder on your machine. refern builds a SQLite index and generates thumbnails alongside your originals without touching the source files. You can search the entire library in milliseconds with full-text FTS5 and 14-plus operators (type:, tag:, rating:, color:, linked:, derived:, is:duplicate, and more), browse a masonry or justified grid, apply hierarchical tags, and open any image on an infinite canvas that pins on top of your painting or modeling app. A relationship graph view shows how images, folders, canvases, groups, and tags connect to each other across your entire library.

refern has been available since March 2026. It is younger than PureRef, has a smaller community, and has fewer tutorials. Those are real gaps.

What is PureRef?

PureRef is a lightweight always-on-top canvas made by Idyllic Pixel AB, a two-person studio in Stockholm. It has been available since 2013, making it one of the oldest and most trusted tools in professional concept art and 3D workflows. Version 2.0 shipped in May 2024 after a four-year gap; version 2.1 added grid snapping, shapes, batch processing, and localization in six languages in January 2026. [pureref.com/blog/pureref2/, pureref.com/blog/pureref21/]

PureRef's core value is laser focus: drag images onto a canvas, keep them visible on top of Photoshop or ZBrush, eyedrop colors through the transparent-to-mouse mode, and stay in flow. It does this extremely well. It is also free for personal non-commercial use (pay-what-you-want, $0 permitted), which is how most artists discover it in school and develop deep habitual familiarity. [pureref.com/download.php]

PureRef does not have search, tagging, a persistent cross-project library, a browser extension, or metadata fields. Each .pur file is a self-contained binary board with images embedded inside it. [pureref.com/handbook/features/]

Organization and search

refern: The library is the core. Every image you import is indexed by filename, description, notes, source URL, creator, tags, color, and EXIF/IPTC/XMP metadata. Full-text search returns results in milliseconds. Inline operators let you write queries like tag:anatomy rating:>=4 type:image or color:#3a5f8c. Color search by hex finds images matching a palette across your entire collection. Visual similarity search finds images that look like a reference you already have. Smart folders are saved queries that auto-populate. Hierarchical tags let you build structures like Character > Anatomy > Hands. Directory metadata presets auto-apply tags when a file lands in a folder. Everything is local, offline, and instantaneous.

PureRef: There is no search of any kind. No filename search, no tag filter, no color filter. If your board contains hundreds of images, finding one specific image requires visually scrolling and scanning the canvas. Users have requested tags, folders, and search since at least 2022 on the official forum; none of these features shipped as of v2.1.3 (June 2026). [pureref.com/forum/read.php?3,2698] PureRef explicitly positions itself as a focused overlay, not an asset manager.

Verdict: If you need to find a reference you collected three months ago, refern is in a different category. PureRef is not designed for library-scale organization, and its developers have not indicated it will be.

Canvas and overlay

refern: The infinite canvas supports layers (nested, named, with optional backgrounds), groups, text elements, nine shape primitives, freehand drawing (pen and eraser with pressure), non-destructive image crop, image filters (brightness, contrast, saturation, hue on canvas), and color swatches. Pin-window-on-top keeps the canvas visible over any other application. Window transparency is adjustable. Mouse click-through lets you interact with apps behind the canvas. A "Find similar" radial wheel on canvas images surfaces visually similar references from your library without leaving the canvas.

PureRef: The always-on-top overlay is genuinely best-in-class. Version 2.0 added the ability to pin above a specific application rather than all windows, which is a meaningful improvement for artists who use multiple monitors. [pureref.com/blog/pureref2/] Transparent-to-mouse mode with a built-in color picker (showing RGB, HSV, and HEX) lets artists eyedrop directly into Photoshop, Clip Studio, or any painting app without switching windows. Annotation includes freehand drawing, shapes (circle, rectangle, line added in v2.1), and rich-text notes. Groups let you cluster images and move them as a unit; a hierarchy window shows parent/child ordering. PureRef uses groups rather than layers; there is no true layer system.

Verdict: Both tools handle the always-on-top overlay use case well. PureRef's color picker with live RGB/HSV/HEX display is a workflow-specific advantage that artists who eyedrop colors constantly will feel. refern's canvas is more capable for composition work (true layers, image filters, nine shapes, freehand drawing), while PureRef's canvas is more focused and faster to start.

Relationships and graph

refern: Typed entity links connect images, folders, canvases, and groups to each other. Four link kinds: grouped (fan cards in the grid), derived-from (crop provenance), placed-in-canvas (backlinks from canvas to source image), and cross-reference (pairwise manual links). A Linked References sidebar shows connections from any image. A full relationship graph view renders the entire library as a navigable network across folders, images, canvases, groups, and tags. This is the "Obsidian for visual references" capability that no other reference tool has.

PureRef: No relationship system beyond canvas groups. There is no cross-project linking, no backlink view, and no graph. Each .pur board is entirely self-contained. Connections between projects do not exist in any structured form.

Verdict: refern, with no competition from PureRef here.

Pricing

refern is $30 one-time at launch pricing, going to $35 about two months after launch. One license covers up to three devices; commercial use is included with no separate tier. [refern.app]

PureRef personal is pay-what-you-want, with suggested amounts of $7 or $15 and $0 permitted for non-commercial use. Small Business is $49 one-time for up to three seats with commercial use. The Business tier for larger teams is $10/seat/month or $8/seat/month billed annually. [pureref.com/download.php]

For a solo freelancer doing commercial work: refern at $30 undercuts PureRef Small Business at $49. For a student or early-career artist who cannot spend $30: PureRef personal wins with $0.

Full feature comparison

Who should choose refern

Choose refern if:

• Your reference collection has grown past a few hundred images and you need to find things by tag, color, keyword, or visual similarity.
• You want your files to live in a normal folder on disk, not locked inside a proprietary binary that can corrupt on a bad save. [pureref.com/forum/read.php?5,1367]
• You want a single app that handles both library organization and infinite canvas, replacing both Eagle and PureRef.
• You save references from the web daily and want a browser extension with hover-save and batch-save.
• You already use Eagle and want to import your library (folders, tags, ratings, sources, notes all transfer).
• You want to trace relationships between images, folders, and canvases in a graph view.
• You do commercial work as a solo freelancer ($30 with commercial included, versus $49 for PureRef Small Business).
• You want a 30-day trial with no account required before committing.

One alpha user put it plainly: "organization and search like eagle cool, canvas from pureref." That is the intended audience.

Who should choose PureRef (or use both)

Choose PureRef if:

• You use it purely as a session-scoped overlay: gather references for a character or environment, work, then close the board. You never need to find that image again. This is a completely valid workflow and PureRef does it faster and cheaper.
• You are a student or early-career artist who cannot spend $30 right now. PureRef personal at $0 for non-commercial use is a significant and genuine advantage.
• You rely on the transparent-to-mouse color picker (RGB/HSV/HEX display) as a daily eyedropping workflow. PureRef's implementation is excellent and tightly integrated in a way refern does not fully replicate.
• You are deeply habituated to PureRef's keybindings and canvas feel, and the switching cost is high.
• You work in a studio environment where PureRef is already standard tooling and your colleagues all use it.

Many artists use both: PureRef as a quick session overlay while working, refern as the persistent library. The tools are complementary, not mutually exclusive.

Switching from PureRef to refern

PureRef's .pur format is a proprietary binary. refern cannot open .pur files directly.

To move your references to refern:

1. In PureRef, select all images and use File > Export Images to export them to a folder on disk.
2. In refern, create a new workspace pointing at that folder (or any parent folder that contains it).
3. refern indexes the images in place without copying them. Your originals stay in the same folder.
4. Use refern's import staging area to add tags, ratings, and descriptions as you organize. EXIF and IPTC metadata embedded in your images is read automatically.

There is no lock-in after the move. refern never copies your files, so deleting the SQLite index and thumbnails folder restores the exact folder state you started with. There is no proprietary format, no export step, and nothing to lose access to.

For artists currently using Eagle as a library and PureRef as a canvas: refern's Eagle importer reads your Eagle library's folder structure, tags, ratings, source URLs, and notes. See the refern vs Eagle comparison for the full migration walkthrough.