SJ Logo Design for Favicons: Choosing and Preparing a Two-Letter Monogram

An SJ logo used as a favicon is a monogram built from the letters S and J, reduced to a compact symbol that stays recognizable in a browser tab, a bookmark list or a home-screen shortcut. In a full logo, the two letters can share space with a wordmark, a tagline and generous spacing. In a favicon, the symbol has to work on a very small square canvas. Selecting the symbol is therefore a decision about legibility at small sizes before it is a decision about style.

No specific SJ brand, template or downloadable file was identified in the material behind this article, so it covers general, verifiable principles for designing and delivering a two-letter monogram favicon. It does not assess any particular SJ logo.

What an SJ monogram has to do in the favicon slot

A favicon identifies a site at a glance among other tabs and icons. For a brand whose name or founders' initials are S and J, the monogram is a natural candidate because it is shorter than any wordmark. Even two letters can be too much detail for the smallest favicon sizes, though. The design task is to keep enough of the S and the J that the mark still reads as the brand, then remove everything else.

The two letters also behave differently at small scale. The S is built from opposing curves with two enclosed or semi-enclosed counters, and those counters tend to fill in when strokes are heavy. The J is mostly a single vertical stroke with a hook. Depending on the typeface, it can look like an I, an L or a stray mark once it is shrunk. Most of the choices below come from managing those two problems.

Symbol options for an SJ favicon

Approach | How it works | Strength at small sizes | Main risk

Side-by-side letters | S and J set next to each other with tight spacing | Both letters stay literally readable | Each letter gets only about half the width, so strokes become thin

Interlocked or ligature monogram | The J's hook or stem shares a stroke or curve with the S | Compact, distinctive shape that fills the square | The overlap can turn into an unreadable knot when reduced

Stacked letters | S above J, or J above S | Uses the vertical space of the square | Each letter gets only about half the height, which crowds the counters of the S

Single initial | Only the S or only the J, taken from the full logo | Largest, clearest letterform | Weaker link to the brand if the initial is not already prominent in the main logo

Enclosed monogram | Letters reversed out of a circle, square or rounded tile | Solid background shape holds up well on varied browser and OS backgrounds | The enclosure takes space from the letters

The table offers editorial guidance, not measured results. The right choice depends on the letterforms in the existing logo. A heavy geometric sans S and J usually survive side-by-side treatment better than a thin script pairing, which often works only as a simplified single initial or a redrawn ligature.

Designing the letters for tiny pixel grids

• Start from the brand's existing monogram or letterforms where possible, then simplify; a favicon that looks unrelated to the main logo does little identification work.
• Increase stroke weight relative to the full-size logo so the S's curves and the J's stem do not break up when rasterized.
• Open the counters of the S. Small enclosed spaces close up first at low resolution.
• Give the J a clear, deliberate hook so it cannot be mistaken for an I or a vertical bar.
• Remove fine details such as hairline serifs, thin outlines, gradients and small decorative flourishes.
• Use strong contrast between the letters and the background, and check how the mark looks on both light and dark browser themes.
• Preview the mark at its actual display sizes, not only enlarged on an artboard. Problems often appear only at true pixel size.
• Where the smallest sizes still look muddy, consider a separately adjusted small version instead of relying on automatic downscaling of the large artwork.

Vector master versus favicon output files

Keep two layers of the deliverable separate. The master artwork should be a vector file in which the S and J are drawn as editable paths, so the monogram can be adjusted, recolored or redrawn later. The favicon itself is delivered in several output formats, some vector and some raster, generated from that master.

A file's extension does not prove that it contains editable vector paths. An SVG, EPS, AI or PDF can wrap an embedded raster image, a pixel bitmap placed inside the vector container, and that bitmap cannot be cleanly scaled or edited as shapes. A raster preview, such as a PNG thumbnail on a download page, is not the artwork at all. To confirm what a file actually holds, open it in a vector editor and check the outline or wireframe view. True vector letters appear as paths with anchor points. An embedded image appears as a single placed object with no path structure.

If the S and J were set in a font, convert the text to outlines in the master so the letterforms do not change on a machine without that font installed. Keep an unconverted copy as well if the type may need adjusting later.

Typical favicon deliverables

• An SVG favicon exported from the vector master, which modern browsers can scale cleanly; keep the exported file free of embedded raster images and unnecessary editor metadata.
• An ICO file containing small raster sizes such as 16×16, 32×32 and 48×48 pixels, for older browsers and contexts that still request it.
• A 180×180 pixel PNG for Apple touch icons used when a site is saved to an iOS home screen.
• 192×192 and 512×512 pixel PNGs referenced from a web app manifest, for Android and progressive web app contexts.
• A maskable icon variant if the site is installable, with the SJ monogram kept inside the specification's central safe zone so platform masks such as circles or rounded squares do not crop the letters.

Exact requirements change over time and vary by platform, so check current browser and platform documentation before finalizing a delivery set.

Rights to check before using an existing SJ logo

A ready-made SJ monogram from a template marketplace, icon library or logo generator brings separate permission questions. Permission to download a file is not the same as permission to modify it, use it as a brand identifier or register it. Read the license for whether editing is allowed, whether commercial or logo use is permitted, and whether the same design is sold to other buyers non-exclusively.

Fonts carry their own licenses. If the monogram is based on a commercial typeface, the font license may restrict logo use or embedding even when the artwork file itself is licensed. Trademark rights are a further layer: two-letter combinations are common, and a similar SJ mark may already be used or registered in the same industry. A trademark search, and legal advice where the stakes justify it, is the way to address that risk. A design license does not settle it.

Gaps in this assessment

No confirmed evidence was available about a specific SJ logo, designer, product, price, tool or file package, so none is described or recommended here. The size and format guidance reflects widely documented favicon practice, not testing of particular SJ designs. Judgments about which monogram approach reads best are editorial and should be confirmed by previewing the actual artwork at real favicon sizes.