Thai font · PAID

DB Ozone X

ดีบี โอโซน เอ็กซ์

By Narongsak Chaiwong

Typography & Licensing Specialist, ThaiGraph · June 13, 2026 · Updated August 22, 2026

Information verified as of August 2026

อ่านหน้า ฟอนต์ DB Ozone X เป็นภาษาไทย — พร้อมลิงก์ดาวน์โหลดและวิธีติดตั้ง →

What DB Ozone X is

DB Ozone X is a paid Thai display sans from DB Fonts (DB Designs Co., Ltd.) in Bangkok, drawn by Parinya Rojarayanond (ปริญญา โรจน์อารยานนท์) and sold as a ten-style family for 1,070 THB. It is not on Google Fonts, the foundry publishes no free or trial tier, and the only legitimate source is DB’s own shop.

The design brief is on the record. In the foundry’s design-notes article of 15 May 2008, Rojarayanond writes that DB Ozone takes its DNA from DIN, the German industrial standard face, and that two DIN traits carry into Thai: geometric stroke construction and unusually open spacing. He also says he reused the “standard-ness” of DB Sathorn — a face already proven by long use — and then held the geometry strictly.

DB is short for Dear Book Design. Luc Devroye’s type reference records it as the first Thai digital type foundry, established in the late 1980s and founded by Rojarayanond. It is the same catalogue that produces DB Helvethaica X, DB Adman X and DB ThaiText; the whole set is indexed under DB fonts.

Is DB Ozone X free to download?

No. DB Ozone X is commercial software. DB Fonts sells it at 1,070 THB per family and publishes no free tier, no trial, and no personal-use exception. Any page advertising a “DB Ozone free download” is distributing a file the foundry did not authorise.

One route confuses people often enough to name it. Kasetsart University publishes a file called DB Ozone.rar on its corporate-identity downloads page — 389 KB, posted 1 December 2022, and showing 2,502 downloads on the date we checked. That page carries no licence terms for the font and does not name DB Designs. It is an internal archive for the university’s own identity work. Pulling it into a client job is unlicensed commercial use, and the liability sits with the studio, not with the university.

DB is not passive about this. On 25 November 2025 the foundry published a notice signed by Rojarayanond as managing director, stating that it does not permit images of DB fonts lacking proof of purchase from DB to be generated through AI and published in any media channel, that doing so infringes copyright, and that DB will pursue infringers. A banner repeating it — ห้ามใช้ฟอนต์ DB ผ่าน AI โดยไม่ซื้อ — sits at the top of every page on dbfont.biz.

If the budget is not there, the lawful route is a Thai font under the SIL Open Font License. We list every one we have verified under free Thai fonts, and the Thai font licensing guide sets out how the terms differ.

Every DB Ozone X weight, including Bold

DB Ozone X ships five weights — UltraLight, Light, Regular, Medium and Bold — each with an italic, for ten styles in one family. The shop lists them under these exact names:

Anyone searching “DB Ozone X Bold” wants the style the shop calls DB Ozone Bold, and it is not sold on its own — the 1,070 THB price is for the whole family of ten. DB does not break this family into single-weight purchases the way some Thai foundries do.

The five weights were not there at the start. The design notes record that DB Ozone launched as a single Regular and was expanded to five, with the two lighter cuts added in response to a design trend toward thinner setting. That history explains the family’s balance: the light end is the newer, more fashion-driven half of the range, and it thins out fast at text sizes.

Price, how to buy it, and what the licence excludes

The shop shows a single-family price of 1,070 THB and requires you to pick a licence type before adding to cart: Desktop font 1-5 coms, or Webfont 1 domain. Payment is by bank transfer to Kasikornbank, Minburi branch, account 094-2-83326-3; you upload the transfer slip through the “Add payment” menu, and DB delivers the files after verifying payment within 24 hours. There is no card checkout and no instant download.

Read the exclusions before you assume 1,070 THB covers your job, because it very often does not. DB’s own FAQ states that the Desktop font 1-5 coms licence installs on five machines and covers general communications material, and then lists what falls outside it and needs an additional licence fee:

• magazines and journals with a publication cycle
• packaging
• applications, games and software
• signage
• webfont use
• any use aimed at establishing an identity — logo, slogan or tagline — whether the choice was recorded in writing or only agreed verbally

That last clause is the one studios trip over. Specifying DB Ozone X as a brand’s standard face across its communications is identity use in DB’s reading, and it is priced separately under the Brand licence (one product or service brand) or the Corporate licence (one organisation, brands excluded). Neither has a published price; both are quote-on-request.

Two more mechanical details from the same FAQ. A desktop licence is delivered as .ttf only — .otf, .woff and .woff2 come with the webfont, Brand and Corporate licences. And converting a desktop font into a webfont yourself is expressly not permitted, so a @font-face build needs the webfont licence bought as such. Licences do not expire.

If you want more than this one family, DB Ozone is also inside DB Font Vol. 4: ten families and 39 styles for 5,885 THB, alongside DB Ettaro, DB Green, DB Object, DB ObjectStroke, DB Pomma, DB PorPiang, DB TaGua, DB Urbanist and DB Xtype.

DB Ozone X, DB Ozone, DB O3 Std and DB OzoneSiam

Four names circulate and only two of them are this typeface. Sorting them out saves buying the wrong file:

• DB Ozone — the product name in DB’s shop today. This is the family on this page.
• DB Ozone X — the same family’s OpenType release. Rojarayanond’s design notes label the OpenType version DBOzoneX and contrast it with the earlier DB Ozone (PostScript), and DB serves the family’s catalogue PDF at /asset/catalog/DBOzoneX.pdf. The X is a generation marker, not a different design.
• DB O3 Std (ดีบี โอทรี) — a separate product. O3 is the chemical formula for ozone, and DB lists it as a similar font, but it is twelve styles with a Heavy weight the Ozone family does not have, at 5,350 THB. Different licence, different money.
• DB OzoneSiam (ดีบี โอโซนสยาม) — a separate product again, and not even the same category: DB files it under Thai Serif. Ten styles at 5,350 THB, one member of a six-family group covering cut and rounded terminals, standard, narrow and space-saving widths.

Name variants and spellings

These all point at the same typeface, and searching any of them should land you here:

• DB Ozone X — the OpenType generation, the name most people type
• DB Ozone — the shop’s product name; no separate purchase
• db ozone x font / font db ozone x — word order makes no difference
• DBOzoneX — the closed-up spelling the foundry’s own design notes use
• ฟอนต์ DB Ozone — the Thai-language search
• ดีบี โอโซน — the Thai name DB uses in its shop
• DB Ozone X Bold — the heaviest of the five weights, listed as DB Ozone Bold
• DB Ozone X font download — there is no free download; the buy page is the download page

Free alternatives to DB Ozone X

If the brief is “engineered, DIN-flavoured Thai display but no licence budget”, the lawful answer is a Thai family under the SIL Open Font License, which is genuinely free for commercial use. Three that cover different situations:

• Chakra Petch — the closest substitute in register: a squared, technical loopless Thai sans with italics, covering the same engineered-display territory and pairing naturally with DIN-flavoured Latin.
• Kanit — a wider weight range for display systems that need heavier extremes than Chakra Petch reaches.
• Prompt — rounder and warmer, for briefs where DIN rigour would read cold.

For running Thai text under any of them, Sarabun is the standard open-licence body face.

One caveat that matters more here than usual: none of these is a drop-in twin. Character widths, spacing and tone-mark positions all differ, so substituting one into a layout already set in DB Ozone X will move every line break. If you have to match an existing file exactly, buying the licence is the only route. Compare them against your own copy in the Thai font tester before deciding.

What the letterforms actually do

DB Ozone X carries DIN’s geometry into Thai with even, engineered strokes and generous internal spacing, and the design notes are specific about which consonants were redrawn to keep the page open. Rojarayanond names the decisions:

• ค and ต use the reduced-head form, without the diagonal neck stroke that ordinary Thai text faces carry
• พ, ฟ and ฬ use diagonal strokes rather than three verticals, because the vertical construction would have made them too wide for a DIN-derived skeleton
• ผ and ฝ are built from an inverted ต so the pair stays clearly distinguishable
• ห, ช and ซ keep their diagonals emphasised, as deliberate contrast in a face otherwise made of verticals and level curves

The X generation earns its letter in the tone marks. In the PostScript original there was a single mai ek to serve every context, so a mai ek over สระอิ sat higher than it needed to. The OpenType version selects a lowered variant automatically. DB’s shop sums the result up in three Thai words: ปลอดโปร่ง โล่งสบาย อ่านง่าย — clear, unclouded, easy to read.

The face has a real usage history rather than a hypothetical one. The design notes name GM magazine covers, the free magazine SHE’s Smart, the CAT Telecom “Clear” campaign, and the Ayudhya Allianz C.P. campaign. Where DB Helvethaica X was drawn to sit beside Helvetica, DB Ozone X answers the same question for the DIN family of forms — see the Thai type foundries map for how the catalogues divide that territory between them.

Best use cases

DB Ozone X is a display family, and the licence tier you need depends less on the design than on where the type will appear. Under a Desktop 1-5 coms licence it fits:

• campaign headlines and print advertising
• editorial openers, covers and magazine-style layouts without a fixed publication cycle
• presentations and general communications material
• posters and one-off promotional work

Under a Brand or Corporate licence, and not otherwise: brand identity systems, logotypes, taglines, packaging, signage and wayfinding, apps and games, and periodicals with a publication cycle. Under a webfont licence, and not converted yourself: anything embedded with @font-face.

Where it does not fit at all: long Thai body text at small sizes — the UltraLight and Light cuts thin out quickly, and DB ThaiText or Sarabun is the right tool — and any deliverable that requires passing the font files on to someone else.

Licensing

DB Ozone X is proprietary software owned by DB Designs Co., Ltd. A licence must be bought before use, the listed single-family price is 1,070 THB, and no tier permits redistributing the files. Desktop covers five machines and delivers .ttf; webfont covers one domain and delivers .ttf, .otf, .woff and .woff2; Brand and Corporate are quote-on-request and are what identity, packaging, signage and application use actually require. Confirm current terms on DB’s licensing and FAQ page and buy from the DB Ozone product page.

Neither a font-aggregator download nor a university identity archive transfers any right to you. For work in the same register with none of the seat-counting, Chakra Petch and Kanit substitute under the SIL Open Font License; the Thai font licensing guide compares the terms side by side.

Information verified as of August 2026