Thai font · PAID

PSL Sans Serif

By Narongsak Chaiwong

Typography & Licensing Specialist, ThaiGraph · July 16, 2026

Information verified as of July 2026

What PSL Sans Serif is

PSL Sans Serif is a commercial Thai sans-serif family from the long-running PSL foundry, designed by Phanlop Thongsuk and sold as a ten-font set under per-user commercial licensing. It is PSL’s general-purpose modern Thai sans, positioned for print, corporate and commercial design rather than free web distribution.

PSL (PSL SmartLetter) is one of Thailand’s established commercial type houses, and its catalogue runs to more than a hundred families. According to the PSL store, PSL Sans Serif ships as ten fonts starting at 1,200 baht, placing it among the foundry’s larger, fuller families.

For designers browsing the ThaiGraph font library, PSL Sans Serif is the paid-catalogue counterpart to the free Thai sans faces — chosen when a studio wants PSL’s specific drawing and spacing across a full weight set and is willing to license it.

Character design and tone

PSL Sans Serif is, as the name states, a sans-serif Thai family, drawn in the clean, standardised style PSL applies across its catalogue rather than as a decorative display face. PSL’s own materials emphasise careful character spacing and consistent construction across a complete family of roman, italic and bold styles.

As a modern Thai sans, it prioritises clarity and even colour on the page over ornament, which suits body and interface roles as well as headings. Because loop treatment and exact proportions vary between PSL cuts, verify the specific look against the foundry’s specimens before committing — the same due diligence we recommend for any commercial face in the Thai typography guide.

The family bundles Thai and Latin, so it can set mixed Thai–English text without a separate Latin companion, the usual expectation for a full sans-serif Thai release.

Weights and availability

PSL Sans Serif is sold as a ten-font family, licensed and downloaded through the PSL store rather than any free channel. It is delivered as TrueType (.ttf) and OpenType (.otf) files, per the foundry’s About Our Fonts page.

The font is not on Google Fonts, Adobe Fonts or any free CDN. Buy it from the PSL store under the appropriate licence for your use. Because it is a large family, it gives more weight range than most single-purchase Thai sans faces.

Best use cases

PSL Sans Serif is the right pick when a commercial Thai project needs a full, professionally spaced sans family and can license it. Strong briefs:

• Corporate identity and brand systems that need a consistent Thai sans across weights
• Print collateral, reports and packaging where PSL’s spacing and finish are wanted
• Advertising and editorial work already standardised on the PSL catalogue
• Bilingual Thai–English layouts needing one licensed family for both scripts
• Signage and wayfinding requiring clear, even Thai sans at a range of sizes

Where it doesn’t fit: budget and open-source projects (use a free face), and web deployments where licensing cost is the deciding factor.

Pairings

PSL Sans Serif pairs with a quiet body face or with other PSL families for catalogue consistency. Three pairings:

• Sarabun — an OFL body sans for contexts where part of the layout must stay licence-free
• Kanit — a loopless OFL display sans for headlines over a PSL Sans Serif text setting
• PSL Kittithada — other PSL families for a unified commercial-print system

Licensing

PSL Sans Serif is commercial proprietary software from the PSL foundry, licensed per user or per computer, with separate educational, personal-home and commercial-use terms. There is no free tier; embedding, webfont deployment and redistribution require the correct PSL licence, verified directly with the PSL store. See our Thai font licensing guide for how commercial terms compare, or use Sarabun where an open licence is required.

Information verified as of July 2026