--- title: "Core Line Icons Set - 5837 customizable PNGs, SVGs, PDFs" product: "Streamline Icons, Illustrations and Elements" url: /icons/core-line canonical_url: "https://www.streamlinehq.com/icons/core-line" summary: "The definitive neutral UI icon — 1px rounded stroke on a 14px grid, stripped to essential form, designed to be invisible infrastructure that serves content rather than demanding attention. Scores at a genuine midpoint on its human↔mechanical character, achieved by no other sub-style in the catalog, and is one of the softer sub-styles available, reflecting a construction so minimal that almost no visual personality remains. The tone signals pure infrastructure: \"we are here if you look; we won't demand that you do.\" Best for productivity tools, component libraries serving diverse audiences, admin panels, and any product with a strong typographic or illustration identity that must not compete with its icon layer." --- # Core Line The definitive neutral UI icon — 1px rounded stroke on a 14px grid, stripped to essential form, designed to be invisible infrastructure that serves content rather than demanding attention. Scores at a genuine midpoint on its human↔mechanical character, achieved by no other sub-style in the catalog, and is one of the softer sub-styles available, reflecting a construction so minimal that almost no visual personality remains. The tone signals pure infrastructure: "we are here if you look; we won't demand that you do." Best for productivity tools, component libraries serving diverse audiences, admin panels, and any product with a strong typographic or illustration identity that must not compete with its icon layer. License: Commercial ## Fit & Recommendation ### Primary use cases - Universal UI navigation and controls where icons should be invisible infrastructure - Any product that values neutrality above personality — icons adapt to the surrounding design system rather than imposing character - Productivity tools (task managers, note apps, calendar apps) where cognitive clarity is primary - Component libraries needing icons that work alongside any colour token system without clashing - Products with very strong typographic or illustration identity — Core Line will not compete - Internal tools and admin panels that prioritise clarity without brand personality --- ## Visual & Technical Specs ### Visual properties | Property | Value | |----------|-------| | Stroke weight | 1px | | Fill | None | | Corner treatment | Rounded caps and joins throughout | | Color | Monochrome | ### Emotional Scores Core Line is somewhat warm and one of the softer sub-styles in the catalog — the 1px stroke on a 14px grid produces one of the lightest, most unobtrusive icon constructions available. It is somewhat friendly and somewhat playful. On its human↔mechanical character, it sits at a near-neutral midpoint — the only sub-style in the catalog to land at this precise balance point, where rounded ends give a slight human quality and strict minimal construction gives a slight systematic quality in equal measure. --- ## Pairing & Compatibility ### Typography pairing - **Primary**: Inter — the pairing is almost tautological; two neutral humanist systems designed for UI at the same level of philosophical reduction - **Alternative**: DM Sans — slightly more personality than Inter, compatible with Core's rounded geometry - **Editorial**: Neue Haas Grotesk — Swiss neutrality in type matches the stripped Swiss construction in icons - **Body**: Source Sans Pro or Mulish — clean, screen-optimized, non-competing - **Avoid**: Display fonts with strong personality (Syne, Playfair Display) — contrast between expressive type and invisible icons creates incoherence ## Categories - [Interface Essential](/icons/core-line/interface-essential) - [Business](/icons/core-line/business) - [Images Photography](/icons/core-line/images-photography) - [Money Shopping](/icons/core-line/money-shopping) - [Programming](/icons/core-line/programming) - [Computer Devices](/icons/core-line/computer-devices) - [Phone](/icons/core-line/phone) - [Mail](/icons/core-line/mail) - [Map Travel](/icons/core-line/map-travel) - [Food Drink](/icons/core-line/food-drink) - [Nature Ecology](/icons/core-line/nature-ecology) - [Entertainment](/icons/core-line/entertainment) - [Shipping](/icons/core-line/shipping) - [Culture](/icons/core-line/culture) - [Health](/icons/core-line/health) - [Work Education](/icons/core-line/work-education) - [Artificial Intelligence](/icons/core-line/artificial-intelligence) - [Arrows](/icons/core-line/arrows) ## Example icons - [3d Perspective Grid](https://assets.streamlinehq.com/image/private/w_34,h_34,ar_1/f_auto/v1/icons/edit/3d-perspective-grid-9aldjwfp2pevv7rckbygf.png/3d-perspective-grid-uugjabil4bl3zmcypwzdow.png?_a=DATAiZkSZAA0) - [Apply To All](https://assets.streamlinehq.com/image/private/w_34,h_34,ar_1/f_auto/v1/icons/edit/apply-to-all-nznxudxf7yxcmoomfh8f.png/apply-to-all-owi1178ucungydhnnny3n.png?_a=DATAiZkSZAA0) - [Attach File Add](https://assets.streamlinehq.com/image/private/w_34,h_34,ar_1/f_auto/v1/icons/edit/attach-file-add-ldvtcn6wnwdh2kqr99mbc7.png/attach-file-add-xcooaa53svrdf7orsk9w.png?_a=DATAiZkSZAA0) - [Attach File Off](https://assets.streamlinehq.com/image/private/w_34,h_34,ar_1/f_auto/v1/icons/edit/attach-file-off-9iduae1b0kuk4j1t8n1a.png/attach-file-off-s50deselff8yht4rkrzfd.png?_a=DATAiZkSZAA0) - [Auto Fit Column Width](https://assets.streamlinehq.com/image/private/w_34,h_34,ar_1/f_auto/v1/icons/edit/auto-fit-column-width-3zf6y51d04ej1yef2zuqu.png/auto-fit-column-width-0squqqf4o3mrlvyz7xm0xvk.png?_a=DATAiZkSZAA0) - [Auto Fit Row Height](https://assets.streamlinehq.com/image/private/w_34,h_34,ar_1/f_auto/v1/icons/edit/auto-fit-row-height-f7lkj0ryu0ivpzyyjevxs9.png/auto-fit-row-height-gfscml5j1m4prnbsnvqrn9.png?_a=DATAiZkSZAA0) - [Auto Save Backup](https://assets.streamlinehq.com/image/private/w_34,h_34,ar_1/f_auto/v1/icons/edit/auto-save-backup-5ug0x0of4masbkq53w895.png/auto-save-backup-xtjzjq1pl4bsdr0iam9dl.png?_a=DATAiZkSZAA0) - [Binder Clip](https://assets.streamlinehq.com/image/private/w_34,h_34,ar_1/f_auto/v1/icons/edit/binder-clip-65ef48m09dhh0ucz5ommnh.png/binder-clip-esfhijar0hipzxvtnj4lam.png?_a=DATAiZkSZAA0) - [Binoculars](https://assets.streamlinehq.com/image/private/w_34,h_34,ar_1/f_auto/v1/icons/edit/binoculars-j4q492iduld2faxv5q2ssi.png/binoculars-mjgjz8k9rbttoclbb5g4u.png?_a=DATAiZkSZAA0) - [Bomb](https://assets.streamlinehq.com/image/private/w_34,h_34,ar_1/f_auto/v1/icons/edit/bomb-7wt5rjbtv5bppf6q06nrtm.png/bomb-611a6bgwqujyh54w8t570e.png?_a=DATAiZkSZAA0) - [Brush Pen Tip Diagonal](https://assets.streamlinehq.com/image/private/w_34,h_34,ar_1/f_auto/v1/icons/edit/brush-pen-tip-diagonal-9211c.png?_a=DATAiZkSZAA0) - [Brush Pen Tip Vertical](https://assets.streamlinehq.com/image/private/w_34,h_34,ar_1/f_auto/v1/icons/edit/brush-pen-tip-vertical-1c005.png?_a=DATAiZkSZAA0) --- [View full sitemap](/sitemap.md)