Choosing icon licences for open source projects

Open source software can be shared freely while its visual assets remain subject to separate copyright rules. An icon downloaded for a prototype may have different conditions from the code surrounding it, so treating every image as automatically reusable can create problems before a project reaches production.

Icon licensing covers more than whether a file is free to download. The licence may control commercial use, modification, redistribution, attribution, inclusion in themes, and delivery inside an application. PSD vector files and transparent PNGs are convenient formats, but the format itself does not grant permission.

For Australian developers, this matters across a wide range of projects, from a Melbourne fintech dashboard to a community app used in Brisbane or a website built for a Perth retailer. A clear asset licence helps teams publish confidently, accept contributions, and explain their choices to clients and users.

Read the licence rather than the download label

Words such as “free”, “open source”, and “royalty-free” are not interchangeable. A free icon set might permit personal projects but exclude paid client work, while a royalty-free pack may allow commercial use but prohibit redistribution as a standalone resource. Look for the actual licence name and its full terms.

Common permissions include copying, adapting, and using icons in commercial products. Restrictions may apply to reselling the original files, placing them in a competing icon library, using them as a logo, or making them available through an asset browser. “For use in websites and applications” can still leave important questions unanswered.

Also check whether the licence covers every file in a collection. A premium pack may contain icons from different artists or third-party libraries, each with separate conditions. Keep the licence text, purchase receipt, source page, and download date with the project records.

Match the licence to your project model

A permissive licence such as MIT-style terms usually creates fewer barriers for an open source application. It may allow modification and commercial distribution, provided required copyright and licence notices remain with the relevant materials. Apache 2.0 can add useful language around patents and notices, though its exact obligations still need review.

Creative Commons licences vary significantly. CC0 is designed as a public-domain dedication, while CC BY generally requires attribution. Licences containing “NC” restrict commercial use, and “ND” can restrict adaptations. Those limits may conflict with a project distributed by a business, sold through an app marketplace, or customised for paying customers.

Copyleft terms deserve special care. The GPL is primarily designed for software, while the SIL Open Font Licence is common for fonts rather than general-purpose artwork. An icon’s licence should be assessed separately from the project’s source-code licence; combining assets does not automatically make all files subject to the same terms.

Separate artwork rights from software rights

Adding an icon to an open source repository can be redistribution of the asset, even when the application itself is freely available. If the icon files are stored in the repository, included in a downloadable theme, or packaged into a design system, confirm that the licence permits those forms of sharing.

A safer approach may be to document the asset source and let users obtain it separately, but this can harm the experience if the project cannot build or run without the files. Some teams therefore include a notice file, an attribution screen, and a clear directory containing third-party licences. Make sure these notices remain visible in compiled releases where required.

For designers comparing collections, PSD Icons resources can be useful when checking whether a set is supplied in editable Photoshop PSD vector format as well as transparent PNG files. Before selecting an asset for an open source package, read the specific terms attached to the chosen free or premium collection and retain a copy for future maintainers.

A practical licence check for maintainers

Use a short review before committing an icon set to a public repository. The aim is to identify restrictions early, particularly when a volunteer project may later attract sponsorship, paid support, or a commercial Australian partner.

• Confirm commercial use and modification rights
• Check whether attribution must appear in the app or documentation
• Verify that redistribution of source files is allowed
• Record the creator, licence, version, and download date

The review should also consider how the project is delivered. A web interface may embed SVG or PNG assets, while a mobile app may bundle them into an installable package. A design system may expose files to contributors, and a template marketplace may distribute them to customers. Each route can trigger a different interpretation of “redistribution”.

• Review logo, trademark, and endorsement restrictions
• Check whether the licence permits sublicensing or bundling
• Identify any third-party assets inside the pack
• Decide where notices will appear in releases

Account for local clients and future changes

Australian open source teams often work across time zones, agencies, universities, councils, and small businesses. A Sydney startup may release a free developer tool today and introduce paid cloud hosting later. A community project in Adelaide may receive artwork from several contributors. Written asset records prevent a change in funding or audience from exposing an old licensing assumption.

Australian Consumer Law can also become relevant when a business supplies a paid product or service, although it does not replace copyright licensing. Avoid promising that an icon pack is “fully unrestricted” unless the supplier’s terms support that statement. For public sector or education work, procurement teams may request evidence of ownership, attribution, and permission to modify materials.

Be especially careful with symbols that could carry cultural or community significance. Indigenous artwork, local emblems, sporting marks, and well-known Australian brand imagery may involve permissions beyond a standard copyright licence. An icon that resembles a kangaroo, map outline, or city landmark is not automatically free of trademark or cultural considerations.

A clean licensing workflow is simple: inspect the terms, select assets that fit the distribution model, document the decision, and preserve the notices. When publishing a new release, review whether the icon set, application licence, and contribution policy still work together. That small habit protects maintainers and gives contributors a reliable standard to follow.

Choose icon collections whose permissions match the way your project will be built, shared, and funded. Keep the licence evidence with the source code, credit creators where required, and replace assets that cannot meet your distribution needs before release.