「Grattis på Födelsedagen」は FontVibe AI で作成したバースデーの文字エフェクトです。白フチのくっきりした虹色ストライプの丸い大文字。紙吹雪と風船の束に囲まれ、ピンクからターコイズへの鮮やかなパーティー背景。

a bright, high-energy birthday celebration scene — vivid, saturated and punchy. BACKGROUND: bright and celebratory but with REAL color saturation — a bold party backdrop such as a vivid candy-color field, a rich saturated gradient (e.g. hot-pink into tangerine, or turquoise into violet), or a confetti-packed party sky; luminous and cheerful, never muddy or grey, but NOT a washed-out pale pastel wash and NOT a flat near-white ground — enough color and contrast for the text to pop off the background. Bright lively party light with sparkling glints. ATMOSPHERE: a dense energetic burst of multicolor confetti and generous clustered balloons framing the composition, sparkles and light streaks — festive and high-energy, keeping the text clearly legible. LETTERFORM COLOR: when the chosen font defines its own color (rainbow, foil, candy, neon, holographic) keep it fully — bold multi-color and per-letter rainbow are welcome and encouraged; otherwise render the letters in vivid saturated party colors, either bright multi-color (each letter or word a different punchy hue) or one or two bold dominant hues, always with strong contrast and a crisp white outline or soft drop shadow so the letters pop. Never dull, washed-out or muddy. LETTERFORM PRIORITY: when the chosen font carries its own treatment (balloon, bubble, foil, script, sticker, rainbow, neon, drip, candy), that treatment takes absolute priority and owns the letters; this style governs only the bright saturated party light, confetti, balloons and palette — never the letter shapes. FALLBACK: if the font carries no material of its own, render bold glossy party lettering with a crisp outline and bright highlight in vivid saturated colors, so the birthday energy reads strong. GROUND: keep the space bright (not a dark night stage) but rich with saturated color, never pale or empty. Render the exact text provided, with no extra or altered words. Render the exact text “Grattis på Födelsedagen” as the unmistakable hero, arranged across two balanced lines with “Grattis på” above and “Födelsedagen” larger below. Use vivid glossy party colors with energetic per-word and per-letter shifts through hot pink, tangerine, lemon yellow, turquoise, violet, and electric blue, each letter edged by a crisp white outline and a soft lifted shadow for immediate legibility. Set it against a rich saturated candy-gradient backdrop flowing from hot pink through tangerine into turquoise and violet, with luminous warm bokeh tucked behind the lettering. Frame the composition with generous clusters of shiny multicolor helium balloons rising from both lower corners and curling along the side edges, leaving clean breathing room around the text. A dense joyful explosion of tiny paper confetti, curled ribbons, star-shaped sprinkles, and metallic streamers bursts from the upper frame and drifts around the words without obscuring them. Add bright sparkles, pinprick glints, and subtle celebratory light streaks across the background. High-energy Swedish birthday-card mood, intensely colorful, polished, cheerful, and punchy; saturated rather than pastel, bright rather than dark, with no extra words, no devices, and no empty pale space.